So we DTD once that month, crazy i know, but that was the one and only time we could have conceived. Plus, I tested a bit early, so didn't get a positive in the time scale the scan today has moved me to! Also, i'm only giving it 12hrs to implant by my reckoning, when it's usually longer....and it cetainly did NOT implant a week before we had sex!!!! It's impossible for me to be 13+1, but of course they dismiss that and go by the scan date. All i can think is that i have a long baby plus a bit of over measuring. At 8 weeks exactly it was measuring 8+3 which again i classed as sonographer error...now we've jumped a week. When i say it's impossible, it really is. So of course there are implications for being classed as over due when i flipping well will not be. And then the pressure for induction. At 4o weeks, i'll be 39, 41 weeks at 42, etc. The 20 week scan and the bloods they do will be out by a week and not as effective as a diagnostic marker. This is going to be an interesting journey. Anyone else have this situation?