I'd like to share my experience too, if that's okay - not least just as an outlet for my grief.
It currently looks like we are going to lose our baby, following a scan last Thursday in which it doesn't look like he/she is developing properly. I'm due to go back for another scan tomorrow morning, but having sensed for a while that something was wrong, have resigned myself to the inevitable.
In terms of how it's happened - I found out I was pg on May 27th and for various reasons, opted for an early private dating scan. We had that the following week, where I was put between 5 and 6 weeks. It was too early to see anything other than a sac and yolk, so was advised to come back two weeks later.
Fourteen days later, we went back and we saw our baby with a heartbeat - however, he or she was only big enough to be dated at 6+4, which seemed odd given the dates from the scan a fortnight earlier. That said, we kept being reassured by the sonographer that the fact there was a heartbeat was the thing we should focus on, so that's exactly what we did.
But sadly, last Thursday (two and a half weeks after the last one) we went for our third scan and the baby could only be dated at 7 weeks. Surprisingly, there was still a heartbeat, but it's now obvious there is something wrong in terms of his or her development.
DP and I are devastated but trying to be positive. Am probably going to opt for the ERPC, as I don't think I could cope with the trauma of bleeding.
Anyway, I just wanted to share my experience in case it helps others, and to say that I've found threads on MN totally invaluable. So thank you. x