Pregnant pig?

Question
Dear Brittany
I got a young guinea pig 2 months ago. I think she may be pregnant because she is very fat. Lately she has been acting weird. She doesn't like being touched on her stomach and when you try to pick her up she tries to nip at your hand. Tonight she acting especially weird, my mom picked her up but she slipped out of her hand then started acting like her back feet hurt. Could these be signs that she is pregnant? Please reply.
 Thank you, Francesca

Answer
If she has a rounded belly that feels at least semi-solid them she is pregnant. Usually you can feel round lumps in their belly also. Pregnant females will also drink, eat and pee more. Does she have any hairloss? Usually pregnant females will not nip at you, and are not sensitive unless they have hairloss and/or scabs. Let me know if you have any more questions.
Brittany