At my 12 week ultrasound to test for Down Syndrome, I noticed that most of the measurements were anywhere from 13 weeks-13 weeks 3 days. I was 12 weeks one day at the time, and asked the ultrasound tech if my due date would be moved, and he said when it's that close, probably not. If it was just a 2-3 day difference, I'd understand, but I was measuring a whole week ahead! Obviously I'll ask my doctor at my next appointment, but I was wondering what y'all think? Thanks!