Thanks guys! I'm glad to hear some of you have had the same thing. My main concern was as Tara said that I knew babies all grew at the same pace at this stage. It's the later scans that be be wrong due to different growth rates. With DS and DD they were both born spot on thier first scan EDD. That is what bothers me, if I really am only 4w5d then I don't understand how I could have got a BFP so early. But like Nic said, it happens. So I'm just gonna go with that Going to get my BT done in the morning, and when I see my Dr. I'll ask for another scan. Thanks so much, I have never freaked like this before but this pg was hard to come by........