Dont worrie I didnt breed my hairless female.

I just have a few questions.

She is starting it get really fat around the sides, and she has not had any contact with my males at all.

The last time she seen a male rat was when she was in the petstore at around 1 month old. That was around December 20th.

Could she be pregnant by one of her brothers from the petstore??
I really am preying she isnt becaue I know hairless females have alot of risks giving birth.

HELP>