We have two female guinea pigs, and one is prone to UTI’s. She was recently treated about two weeks ago for a Uti, where she was checked for stones and such. The piggy has developed a huge abscess like bump on her genitals. She has an appointment tomorrow, but I am still so worried. She is still eating, pooping, drinking, and does not appear to be in pain that is causing her to vocalize. Does anyone have any idea what this could be?