I have a female guinea pig, and what i thought was a female guinea pig. We adopted them and the rescue said they were both females. I had them together in a really big cage for about 2-3 months now. But now one (alice) looks like she has a bulge on both sides of her hips. She feels hevier but wont let me touch her at all and thats not normal for her. she is about 6 1/2 months old. I have seperated her from the other piggie for now but what else should i do?