I just hate not knowing for sure! It's killing me. I can't wait till my scale gets here tomorrow!
She's not 'very' round (especially compared to some pictures I've looked at of obviously pregnant rats), but her nipples are showing still, she does have a pear shape, and seems to eat more frequently than my males and other two females. I feel like shes getting lonely being in the baby-safe cage by herself, so I try to put her on the couch with me as much as possible, and I also gave her free roam of one of my rat-proofed rooms this morning for about an hour. My 'rat palace' where the boys live is also in that room, so the boys were able to sniff her between the cage bars. My youngest buck got a little squirrelly when he smelled her through the bars, but she wasn't phased and just moved on to explore the rest of the room. I've been watching for her to go into heat, but she hasn't shown any of the usual outward signs of it - even when she was exposed to the scent and presence of the boys, she didn't seem interested in them or what they were doing.
My understanding is that pregnant rats will cease to cycle through heat, and normally a non-pregnant rat can be put into heat by exposing her to males (even if its just their scent). Can the fact that she didn't respond at all, or even seem interested be another sign that shes pregnant?