I am currently pregnant through ivf. I am 8 wks 6d pregnant but only measuring 8wk 3d. It has been consistent that I have been measuring 3 days behind for 2 u/s already and was wondering if I should have any concerns since it is 3 days behind? The baby has a strong heartbeat which we've seen twice so that's a good thing, I'm just worried about the measurements... any thoughts??? Has anyone had this happen and things turn out just fine? Thx!!!