Google isn't much help and the chance of rape while I was back home is very slim (but the thought is horrible). This is so frustrating!
So that would mean you think your about two weeks off right? I read something about the babies being 2 weeks behind I think. It goes by how old the fetus is and how many wks pregnant u are. Im not sure how they get the different numbers. Same thing happened to me though it says I would have concieved on the very last day of my cycle. But that is what the ultrasounds are for and if they are pretty close to yohr LMP
Early ultrasounds are very accurate. Weird things happen, and if you had unprotected sex a baby is always possible :)