Ultrasound = Ultraconfused

Ok, so here it goes.

We had the ultrasound yesterday. Had a nice, full bladder and everything. The tech got a look at my uterus, and decided that we'd need the internal ultrasound as well. A trip to the bathroom, a sheet for my lower body, and an intimidating wand later, we got a closer look.

THE GOOD NEWS:
I am definitely pregnant! We saw the amniotic sac!
It is a single, no twins. I get to stay w/the midwives!
Pregnancy looks normal. No ectopic pregnancies or anything abnormal showing in my uterus or ovaries.
I'm definitely due after my birthday! Although that does mean I'll be huge for it...

THE WEIRD NEWS:
According to the measurements of the sac, the estimate was 5 weeks, 2 days pregnant. Which means 3 week old baby. Which I know for a fact isn't right. I am positive we conceived before xmas. That estimate would put conception at Dec. 26th. That sperm had to have hung around for a longer-than-average time for that to happen. Not impossible, but unlikely. Plus my cycle was already late by Dec. 24th. And there's no way that I got a positive home pregnancy test 8 days after conceiving!  We looked up the accuracy of early ultrasound and found out that even though it's usually the most accurate one of the pregnancy, it still has a margin of error of around 1.2 weeks. Which, added to the estimate, would be closer to the dates I suspect we conceived (Dec. 14-20). The tech said that since we were originally thinking 8 weeks pregnant (outside the margin of error), I'd want to talk to the midwives and see how my blood work comes back. The hormone levels should give us a better idea when put together with the information and the ultrasound.

We went in for answers, and ended up more confused than when we started. We did get those few answers, however, and since they are the ones most important to baby's and mama's health, we'll take it as a good thing. Oh, and my due date is officially in the first half of September.  The 18th by the ultrasound estimate. And no earlier than the 5th. Narrowing it down!  I'm planning on calling the midwives in a little bit, so I'll blog more as I learn things.

Off to take care of poor hubby who had a root canal this morning!