what are the signs of rat pregnancy?

[Dakota]

what are the signs of rat pregnancy from week 1-3. when will her belly pop up. what are some of the signs in behavior, eating/drinking, nesting, and when will they show up? thanks
i think my rattie is pregnant. i've had her for a week and two days, so if shes pregnant, she has been for at least a week and two days. her nipples are visible, but this might be so on all rats. her tummy is getting bigger, but she is young so this might be her aging, although it does look rounded in an unnatural way (like a pregnant woman) not just a fat rat. she is very private about her underside. when i first got her, i was able to hold her upside down whenever i wanted to see her sex, and this was totally fine with her. now she gets nervous when i hold her like that. i put in a few pieces of paper towel, and she took them all to one corner and sleeps on them (is this normal for a rat, or is it just pregnant rat behavior?). the only thing is she is still lovable and sweet. she loves to be held and is obsessed with licking my fingers. its really funny and cute.

[Chris]

2 to 4 weeks she will have them her belly will start to show in about a week her mood will be very short temperd and she will spend alot of time to her self you will also see a change in her milk sack they will enlarge as the pregnacy progresses you aslo might want to to know that a rat can get pregnat at 6 weeks old so if you dont want any more babie you might want to seperate male from female around that time