I have read this thread with interest over the last couple of days, I have written some of this before on another thread so some of you may have seen this.
Following IVF/ICSI I was pregnant with twins. At the 13 week scan, the scanner spent a long time on the nuchal scan of one baby, I already felt unsure about things, and immediately knew what she was checking and asked about it, anyway, she said the nuchal on its own without age/blood tests was 1/15 which is high, the other baby was 1/350 and my first baby had been even lower odds. She offered us cvs it being too early for amnio and came with us to the Harris Birthright Unit (we were at kings) There we got immediately seen by Prof Nicholades (Sorry to all you ladies with appointments getting held up) Had cvs on both babies, prof N and all the staff were v supportive and involved, and then had to wait for the results. They came back really quickly which was a huge relief, it was awful waiting but in a sense I knew what the answer was going to be. My baby was confirmed with Downs, the other did not. The lady on the phone was v supportive and we aranged to go back into HBU the next day to discuss the options.
The concern was over a twin pregnancey, there was a high chance of miscarriage and the later it happened it was extremely likely that it would cause both babies to miscarry.
Both dp and I agreed that we would have a termination, I know this seems bizarre to some people having gone through ivf to then terminate but I had already had one v stressful ivf treatment where I sufferred severe OHSS which resulted in my embreyoes being frozen, having a twin pregnancy where I miscarried naturally at 7 weeks followed by a prem baby - I could not cope in my second pregnancy with the knowledge of what could happen, of worrying throughout if I would miscarry both, of being able to cope with a 21 month child, and 2 babies, 1 with downs.
It was heartbreaking going through the termination, Prof Nicholades was v kind throughout, and the staff at HBU phoned regularly to see how I was doing and did not mind me coming in for checks/scans etc whenever I was concerned. The termination carried roughly a 1/15 change of forcing a miscarriage but the longer we went the lower the risk. As termination of one baby in a twin pregnancy is unusual there were no statistics to assess the risk.
Luckily my pregnancy continued okay and I have a wonderful dd, but each birthday is tinged with sadness as I remember the one I do not have.
I am sorry if this (v long) story offends some, but I would still make the same decision; thinking of anyone who is going through anything similar...