accidental mommy

So, first off, Hi, I'm new here :) I rescued 2 dwarf rats a bit ago, and I think one of them might be pregnant but I'm not sure. The first rat, Paris, I got about 3 and a half weeks ago. She was housed with intact males (they were all feeder rats) but she's never showed any signs of being...

I counted them all last night and checked em out, they all have milk lines and seem healthy to me! There were two that were a little smaller but they still had full bellies, so I just placed them on top of the pile and will keep an eye on em. I tried to get a look at the sexes while I was at it...