Does this sound right to you?

BFP 1/3/12.

On 1/25/12, I measured 6w2d, EDD 9/18/12 (which would actually have meant I was 6w1d.)

So I either got the BFP at 3w or 3w1d...or something is wrong and I was measuring small because of it.

The closer I get to my appointment around 11 and a half weeks, the more this freaks me out. I know there's nothing I can do about it, but I just have this feeling that there won't be a heartbeat.