I went to the Emergency Room last night because I was having pain to the right of my navel around where my appendix is. The doctor asked the normal questions: how far along are you? when was your last period? etc. I told him 11/28/12 so I think around 5 weeks. He said my urine sample came back that I am pregnant and everything looked normal, no UTI etc. He then said they were going to do an ultrasound. They did an internal ultrasound, then the doctor came in and asked if i was positive about the dates. I assured as I was since I was in the middle of a Food Safety class for work when it came and it was a day earlier than expected... he said the baby isn't big enough to have a heartbeat and therefore size wise I don't look like I am 5 or so weeks along. What does this mean? I mean, I used the "estimate your due date" thing on here and it is what said 5 and 1/2 weeks along and though I know it's just an estimate and that it obviously doesn't know when I conceived but I don't know... maybe my ovulation was late? or i got pregnant at the end of ovulation? Or maybe the baby is just small? I myself only weighed 4 lbs when I was born and I was on time I've always been small. Any input would be great!?!!