diff --git a/pyrogram/client/methods/chats/set_chat_photo.py b/pyrogram/client/methods/chats/set_chat_photo.py
index 3a996711..d394322c 100644
--- a/pyrogram/client/methods/chats/set_chat_photo.py
+++ b/pyrogram/client/methods/chats/set_chat_photo.py
@@ -63,7 +63,7 @@ class SetChatPhoto(BaseClient):
         """
         peer = self.resolve_peer(chat_id)
 
-        if os.path.exists(photo):
+        if os.path.isfile(photo):
             photo = types.InputChatUploadedPhoto(file=self.save_file(photo))
         else:
             photo = utils.get_input_media_from_file_id(photo, file_ref, 2)
diff --git a/pyrogram/client/methods/messages/edit_inline_media.py b/pyrogram/client/methods/messages/edit_inline_media.py
index 700804d9..f409ae06 100644
--- a/pyrogram/client/methods/messages/edit_inline_media.py
+++ b/pyrogram/client/methods/messages/edit_inline_media.py
@@ -16,6 +16,8 @@
 #  You should have received a copy of the GNU Lesser General Public License
 #  along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.
 
+import re
+
 import pyrogram
 from pyrogram.api import functions, types
 from pyrogram.client.ext import BaseClient, utils
@@ -72,35 +74,35 @@ class EditInlineMedia(BaseClient):
         parse_mode = media.parse_mode
 
         if isinstance(media, InputMediaPhoto):
-            if media.media.startswith("http"):
+            if re.match("^https?://", media.media):
                 media = types.InputMediaPhotoExternal(
                     url=media.media
                 )
             else:
                 media = utils.get_input_media_from_file_id(media.media, media.file_ref, 2)
         elif isinstance(media, InputMediaVideo):
-            if media.media.startswith("http"):
+            if re.match("^https?://", media.media):
                 media = types.InputMediaDocumentExternal(
                     url=media.media
                 )
             else:
                 media = utils.get_input_media_from_file_id(media.media, media.file_ref, 4)
         elif isinstance(media, InputMediaAudio):
-            if media.media.startswith("http"):
+            if re.match("^https?://", media.media):
                 media = types.InputMediaDocumentExternal(
                     url=media.media
                 )
             else:
                 media = utils.get_input_media_from_file_id(media.media, media.file_ref, 9)
         elif isinstance(media, InputMediaAnimation):
-            if media.media.startswith("http"):
+            if re.match("^https?://", media.media):
                 media = types.InputMediaDocumentExternal(
                     url=media.media
                 )
             else:
                 media = utils.get_input_media_from_file_id(media.media, media.file_ref, 10)
         elif isinstance(media, InputMediaDocument):
-            if media.media.startswith("http"):
+            if re.match("^https?://", media.media):
                 media = types.InputMediaDocumentExternal(
                     url=media.media
                 )
diff --git a/pyrogram/client/methods/messages/edit_message_media.py b/pyrogram/client/methods/messages/edit_message_media.py
index b6fbf933..3ab90744 100644
--- a/pyrogram/client/methods/messages/edit_message_media.py
+++ b/pyrogram/client/methods/messages/edit_message_media.py
@@ -17,6 +17,7 @@
 #  along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
+import re
 from typing import Union
 
 import pyrogram
@@ -78,7 +79,7 @@ class EditMessageMedia(BaseClient):
         parse_mode = media.parse_mode
 
         if isinstance(media, InputMediaPhoto):
-            if os.path.exists(media.media):
+            if os.path.isfile(media.media):
                 media = self.send(
                     functions.messages.UploadMedia(
                         peer=self.resolve_peer(chat_id),
@@ -95,14 +96,14 @@ class EditMessageMedia(BaseClient):
                         file_reference=media.photo.file_reference
                     )
                 )
-            elif media.media.startswith("http"):
+            elif re.match("^https?://", media.media):
                 media = types.InputMediaPhotoExternal(
                     url=media.media
                 )
             else:
                 media = utils.get_input_media_from_file_id(media.media, media.file_ref, 2)
         elif isinstance(media, InputMediaVideo):
-            if os.path.exists(media.media):
+            if os.path.isfile(media.media):
                 media = self.send(
                     functions.messages.UploadMedia(
                         peer=self.resolve_peer(chat_id),
@@ -132,14 +133,14 @@ class EditMessageMedia(BaseClient):
                         file_reference=media.document.file_reference
                     )
                 )
-            elif media.media.startswith("http"):
+            elif re.match("^https?://", media.media):
                 media = types.InputMediaDocumentExternal(
                     url=media.media
                 )
             else:
                 media = utils.get_input_media_from_file_id(media.media, media.file_ref, 4)
         elif isinstance(media, InputMediaAudio):
-            if os.path.exists(media.media):
+            if os.path.isfile(media.media):
                 media = self.send(
                     functions.messages.UploadMedia(
                         peer=self.resolve_peer(chat_id),
@@ -168,14 +169,14 @@ class EditMessageMedia(BaseClient):
                         file_reference=media.document.file_reference
                     )
                 )
-            elif media.media.startswith("http"):
+            elif re.match("^https?://", media.media):
                 media = types.InputMediaDocumentExternal(
                     url=media.media
                 )
             else:
                 media = utils.get_input_media_from_file_id(media.media, media.file_ref, 9)
         elif isinstance(media, InputMediaAnimation):
-            if os.path.exists(media.media):
+            if os.path.isfile(media.media):
                 media = self.send(
                     functions.messages.UploadMedia(
                         peer=self.resolve_peer(chat_id),
@@ -206,14 +207,14 @@ class EditMessageMedia(BaseClient):
                         file_reference=media.document.file_reference
                     )
                 )
-            elif media.media.startswith("http"):
+            elif re.match("^https?://", media.media):
                 media = types.InputMediaDocumentExternal(
                     url=media.media
                 )
             else:
                 media = utils.get_input_media_from_file_id(media.media, media.file_ref, 10)
         elif isinstance(media, InputMediaDocument):
-            if os.path.exists(media.media):
+            if os.path.isfile(media.media):
                 media = self.send(
                     functions.messages.UploadMedia(
                         peer=self.resolve_peer(chat_id),
@@ -237,7 +238,7 @@ class EditMessageMedia(BaseClient):
                         file_reference=media.document.file_reference
                     )
                 )
-            elif media.media.startswith("http"):
+            elif re.match("^https?://", media.media):
                 media = types.InputMediaDocumentExternal(
                     url=media.media
                 )
diff --git a/pyrogram/client/methods/messages/send_animation.py b/pyrogram/client/methods/messages/send_animation.py
index 288ed04e..c84e0503 100644
--- a/pyrogram/client/methods/messages/send_animation.py
+++ b/pyrogram/client/methods/messages/send_animation.py
@@ -17,6 +17,7 @@
 #  along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
+import re
 from typing import Union
 
 import pyrogram
@@ -163,7 +164,7 @@ class SendAnimation(BaseClient):
         file = None
 
         try:
-            if os.path.exists(animation):
+            if os.path.isfile(animation):
                 thumb = None if thumb is None else self.save_file(thumb)
                 file = self.save_file(animation, progress=progress, progress_args=progress_args)
                 media = types.InputMediaUploadedDocument(
@@ -181,7 +182,7 @@ class SendAnimation(BaseClient):
                         types.DocumentAttributeAnimated()
                     ]
                 )
-            elif animation.startswith("http"):
+            elif re.match("^https?://", animation):
                 media = types.InputMediaDocumentExternal(
                     url=animation
                 )
diff --git a/pyrogram/client/methods/messages/send_audio.py b/pyrogram/client/methods/messages/send_audio.py
index e271d96c..49fd0e09 100644
--- a/pyrogram/client/methods/messages/send_audio.py
+++ b/pyrogram/client/methods/messages/send_audio.py
@@ -17,6 +17,7 @@
 #  along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
+import re
 from typing import Union
 
 import pyrogram
@@ -163,7 +164,7 @@ class SendAudio(BaseClient):
         file = None
 
         try:
-            if os.path.exists(audio):
+            if os.path.isfile(audio):
                 thumb = None if thumb is None else self.save_file(thumb)
                 file = self.save_file(audio, progress=progress, progress_args=progress_args)
                 media = types.InputMediaUploadedDocument(
@@ -179,7 +180,7 @@ class SendAudio(BaseClient):
                         types.DocumentAttributeFilename(file_name=file_name or os.path.basename(audio))
                     ]
                 )
-            elif audio.startswith("http"):
+            elif re.match("^https?://", audio):
                 media = types.InputMediaDocumentExternal(
                     url=audio
                 )
diff --git a/pyrogram/client/methods/messages/send_document.py b/pyrogram/client/methods/messages/send_document.py
index 24a754f0..8f15c5ee 100644
--- a/pyrogram/client/methods/messages/send_document.py
+++ b/pyrogram/client/methods/messages/send_document.py
@@ -17,6 +17,7 @@
 #  along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
+import re
 from typing import Union
 
 import pyrogram
@@ -143,7 +144,7 @@ class SendDocument(BaseClient):
         file = None
 
         try:
-            if os.path.exists(document):
+            if os.path.isfile(document):
                 thumb = None if thumb is None else self.save_file(thumb)
                 file = self.save_file(document, progress=progress, progress_args=progress_args)
                 media = types.InputMediaUploadedDocument(
@@ -154,7 +155,7 @@ class SendDocument(BaseClient):
                         types.DocumentAttributeFilename(file_name=file_name or os.path.basename(document))
                     ]
                 )
-            elif document.startswith("http"):
+            elif re.match("^https?://", document):
                 media = types.InputMediaDocumentExternal(
                     url=document
                 )
diff --git a/pyrogram/client/methods/messages/send_media_group.py b/pyrogram/client/methods/messages/send_media_group.py
index 8571ef4f..9ca4473b 100644
--- a/pyrogram/client/methods/messages/send_media_group.py
+++ b/pyrogram/client/methods/messages/send_media_group.py
@@ -18,13 +18,12 @@
 
 import logging
 import os
-import time
+import re
 from typing import Union, List
 
 import pyrogram
 from pyrogram.api import functions, types
 from pyrogram.client.ext import BaseClient, utils
-from pyrogram.errors import FloodWait
 
 log = logging.getLogger(__name__)
 
@@ -77,7 +76,7 @@ class SendMediaGroup(BaseClient):
 
         for i in media:
             if isinstance(i, pyrogram.InputMediaPhoto):
-                if os.path.exists(i.media):
+                if os.path.isfile(i.media):
                     media = self.send(
                         functions.messages.UploadMedia(
                             peer=self.resolve_peer(chat_id),
@@ -94,7 +93,7 @@ class SendMediaGroup(BaseClient):
                             file_reference=media.photo.file_reference
                         )
                     )
-                elif i.media.startswith("http"):
+                elif re.match("^https?://", i.media):
                     media = self.send(
                         functions.messages.UploadMedia(
                             peer=self.resolve_peer(chat_id),
@@ -114,7 +113,7 @@ class SendMediaGroup(BaseClient):
                 else:
                     media = utils.get_input_media_from_file_id(i.media, i.file_ref, 2)
             elif isinstance(i, pyrogram.InputMediaVideo):
-                if os.path.exists(i.media):
+                if os.path.isfile(i.media):
                     media = self.send(
                         functions.messages.UploadMedia(
                             peer=self.resolve_peer(chat_id),
@@ -142,7 +141,7 @@ class SendMediaGroup(BaseClient):
                             file_reference=media.document.file_reference
                         )
                     )
-                elif i.media.startswith("http"):
+                elif re.match("^https?://", i.media):
                     media = self.send(
                         functions.messages.UploadMedia(
                             peer=self.resolve_peer(chat_id),
diff --git a/pyrogram/client/methods/messages/send_photo.py b/pyrogram/client/methods/messages/send_photo.py
index 4d6a18a3..c21bb487 100644
--- a/pyrogram/client/methods/messages/send_photo.py
+++ b/pyrogram/client/methods/messages/send_photo.py
@@ -17,6 +17,7 @@
 #  along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
+import re
 from typing import Union
 
 import pyrogram
@@ -137,13 +138,13 @@ class SendPhoto(BaseClient):
         file = None
 
         try:
-            if os.path.exists(photo):
+            if os.path.isfile(photo):
                 file = self.save_file(photo, progress=progress, progress_args=progress_args)
                 media = types.InputMediaUploadedPhoto(
                     file=file,
                     ttl_seconds=ttl_seconds
                 )
-            elif photo.startswith("http"):
+            elif re.match("^https?://", photo):
                 media = types.InputMediaPhotoExternal(
                     url=photo,
                     ttl_seconds=ttl_seconds
diff --git a/pyrogram/client/methods/messages/send_sticker.py b/pyrogram/client/methods/messages/send_sticker.py
index 76a42d3d..d9575885 100644
--- a/pyrogram/client/methods/messages/send_sticker.py
+++ b/pyrogram/client/methods/messages/send_sticker.py
@@ -17,6 +17,7 @@
 #  along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
+import re
 from typing import Union
 
 import pyrogram
@@ -113,7 +114,7 @@ class SendSticker(BaseClient):
         file = None
 
         try:
-            if os.path.exists(sticker):
+            if os.path.isfile(sticker):
                 file = self.save_file(sticker, progress=progress, progress_args=progress_args)
                 media = types.InputMediaUploadedDocument(
                     mime_type=self.guess_mime_type(sticker) or "image/webp",
@@ -122,7 +123,7 @@ class SendSticker(BaseClient):
                         types.DocumentAttributeFilename(file_name=os.path.basename(sticker))
                     ]
                 )
-            elif sticker.startswith("http"):
+            elif re.match("^https?://", sticker):
                 media = types.InputMediaDocumentExternal(
                     url=sticker
                 )
diff --git a/pyrogram/client/methods/messages/send_video.py b/pyrogram/client/methods/messages/send_video.py
index fc58aa98..9a67bbbb 100644
--- a/pyrogram/client/methods/messages/send_video.py
+++ b/pyrogram/client/methods/messages/send_video.py
@@ -17,6 +17,7 @@
 #  along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
+import re
 from typing import Union
 
 import pyrogram
@@ -160,7 +161,7 @@ class SendVideo(BaseClient):
         file = None
 
         try:
-            if os.path.exists(video):
+            if os.path.isfile(video):
                 thumb = None if thumb is None else self.save_file(thumb)
                 file = self.save_file(video, progress=progress, progress_args=progress_args)
                 media = types.InputMediaUploadedDocument(
@@ -177,7 +178,7 @@ class SendVideo(BaseClient):
                         types.DocumentAttributeFilename(file_name=file_name or os.path.basename(video))
                     ]
                 )
-            elif video.startswith("http"):
+            elif re.match("^https?://", video):
                 media = types.InputMediaDocumentExternal(
                     url=video
                 )
diff --git a/pyrogram/client/methods/messages/send_video_note.py b/pyrogram/client/methods/messages/send_video_note.py
index 64bde11b..b7acdc01 100644
--- a/pyrogram/client/methods/messages/send_video_note.py
+++ b/pyrogram/client/methods/messages/send_video_note.py
@@ -128,7 +128,7 @@ class SendVideoNote(BaseClient):
         file = None
 
         try:
-            if os.path.exists(video_note):
+            if os.path.isfile(video_note):
                 thumb = None if thumb is None else self.save_file(thumb)
                 file = self.save_file(video_note, progress=progress, progress_args=progress_args)
                 media = types.InputMediaUploadedDocument(
diff --git a/pyrogram/client/methods/messages/send_voice.py b/pyrogram/client/methods/messages/send_voice.py
index 753e3806..23492f53 100644
--- a/pyrogram/client/methods/messages/send_voice.py
+++ b/pyrogram/client/methods/messages/send_voice.py
@@ -17,6 +17,7 @@
 #  along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
+import re
 from typing import Union
 
 import pyrogram
@@ -132,7 +133,7 @@ class SendVoice(BaseClient):
         file = None
 
         try:
-            if os.path.exists(voice):
+            if os.path.isfile(voice):
                 file = self.save_file(voice, progress=progress, progress_args=progress_args)
                 media = types.InputMediaUploadedDocument(
                     mime_type=self.guess_mime_type(voice) or "audio/mpeg",
@@ -144,7 +145,7 @@ class SendVoice(BaseClient):
                         )
                     ]
                 )
-            elif voice.startswith("http"):
+            elif re.match("^https?://", voice):
                 media = types.InputMediaDocumentExternal(
                     url=voice
                 )