I had an ultrasound today at what I thought I was 7weeks and 6 days, according to my LMP. But The baby was measuring 6 weeks and 1 day. We saw the little flicker of the heartbeat. The Dr said it was a little slow but for the date I'm measuring it's normal. I'm just concerned because my periods are like clock work and I got a faint positive 5 days before my missed period which was on dec 23. So I just knew my dates were right... anyone had the same situation?