So my whole pregnancy I have been measuring a lot bigger than what I truly am. For example when I was 22 weeks I measured 28 weeks. When I was 30 weeks I measured 33 weeks. Now I am 35 weeks and measuring 38 weeks. It is really common to measure alot bigger than what I am, or could I be farther along than they think. But at the same time when I was 18 weeks and found out I was having a girl they said I was 17 weeks and told me the size of the baby then. So I just dont get it. I know ultra sounds are pretty accurate, but could she have just been small at that time, and now measuring what she truly is. Because at my regular doctor she still indicated me being 18 weeks after that ultra sound that said I was 17 weeks. I am just wondering if I could of had a period and was already pregnant. Only because they go off your last period. Plus they say I got pregnant the last weeks of October, but I remember during Thanksgiving which is the 3rd week of November I was already having pregnancy symptoms like feeling sick, stomache, nauseas, there is no way I could of only been 3 weeks pregnant and feeling those symptoms. Someone please help!