I've been for my follow up scan this afternoon Last week a hb couldn't be seen but she measured me at 6 weeks (whereas based on EDD I shoulda been 7+1) Today still no hb to be seen, but he reckons its cos it's too soon, he measured me as only 5 weeks when I should be 7+5! Somehow its... Shrunk??? I don't really know what's going on He measured the yolk sack as being 3.4mm whatever that counts for... Back in 2 weeks for my third scan Surely it'll look different then? My last period was 4/4/13. We dtd 13/4/13 Can someone do the math and fill me in? My head hurts a bit with all of this...!