I'm pretty sure my rat is pregnant because she was in a cage with a male for quite a bit of time and she has gained lots of weight. Today her nipples where noticeable and it looked like she was having contractions but im not sure. She keeps laying on her stomach and stretching, then she'll mover to her side and spread her legs. I'm not sure if she's in labor tho because she hasn't t been spotting. Please help.