Otis is home from the vet for the night (I have to take him back in tomorrow) so they left the IV needle in his arm with it bandaged up. When I first got him home I noticed that his paw was swollen but I assumed it was from the fluids. That was about 5 hours ago and his paw is still big. The pads on his paw aren't swollen and neither are his claws but his 'pinky toe' is red around the nail. I don't want to take out the IV needle because I don't want to mess anything up but I also don't think he needs emergency care. Any thoughts?