After 8 days of having my month old guinea pig, I was on the bed with her and she fell of and hurt her leg. My mum who works with animals said there was no swelling or bruising, but 2 months on, when I stroke a certain place on her thigh area she lifts her leg up like it hurt. I stroked my other guinea pigs thigh to see if there was a same reaction but didn't react to it, does she have a broken leg?