hi! My 5 month old puppy was spayed a little over a month ago. She got the surface sutures removed about two weeks ago and has looked good ever since. It is laying down nicely. However, as of last week, she started developing what resembles a pimple on the bottom of the scar. It s a bright red raised bump probably 1/3 to half an inch long and a couple centimeters wide. It has gotten a little bigger and darker since I first noticed it last week, but not too much. Could this be an infection? Or irritation from the internal sutures? She doesn't seem to be in any pain, even when I rub the area around the bump. Any help is appreciated! Thanks!!