Eggletina, I am so, so, so sorry. I know nothing anyone can say helps. And - as someone who has had two medical terminations as you know- I know only too well the sense of disbelief when your fears come true in the second pregnancy. I couldn't believe it, on the one hand, and it seemed totally inevitable and expected, on the other. Once can seem random. Twice is something else.
My circumstances were different from yours - first termination at 13 weeks, second at 20 weeks - and I felt very differently (second baby felt much more like a lost baby, first like a lost pregnancy, iyswim - probably due to gestational stage). But in a way I did know what to expect more and that made it easier. I am sure the actual process will be quicker at 14 weeks than at 22. Mine certainly was. Though obviously there can be complications. I missed the delivery of the foetus in my 13 week termination because I passed out.
Anyway you know about the technicalities of it all; I'd guess you're more wondering how the second time affected the whole need to conceive again. The second termination made me determined to start ttc again straight away (I waited three months after the first, one month after the second). DH felt the same as me, or at least if he didn't he went with me. I felt that I had been through too much to give up; it just made it all the more urgent. In my case the consultants were convinced it was random bad luck - my babies had Turners syndrome (the first -though I terminated because she wouldnt survive, not because she had Turners iyswim - sounds similar to your current situation) and bilateral renal agenesis (which is incompatible with life) - and the consultants insisted there could be no connection between them. I don't believe that, btw. I am sure there must be and they just haven't discovered it yet. I know too many people who have been through this twice, apparently coincidentally, for me to believe in the coincidence. Me, Manitz, Bee, Linspins, Shangrila, Havingkittens, Bezzy (terminated for T21; mc with T13), Babylily, Grandj, more, I am sure, but can't remember names off-hand. All of us genetically tested and told it was random. I am sure you will be told the same once testing is done. Random bad luck. That is what they say. Not at all sure I believe it.
Having said the above, I know of NO ONE who has gone through it three times. So I am sure you won't, either. Not that that helps you atm.
I basically pretended I wasn't pregnant during my last pregnancy. I had frequent scans, had high risk written everywhere over my notes, but I was in denial. My method of coping. I had them turn the screens off for every scan until it turned out okay. And I cleared my diary for days after every scan to ensure time for a termination.
I am so so sorry you find yourself in this position. I do know how it feels. I was pretty numb, second time around, lots of the time. I had tried to tell myself it would all be okay, the first time had been bad luck,and then it all went wrong and I couldnt tell myself that anymore. I just had to find a way of coping and mine was to get pregnant again. If you feel the same, I am pretty sure your DH will change his mind. Bezzyk's DH was the same and he came around.
I'm here, anyway. I don't come on much now but I will check back to see how you are. You WILL get there, honestly. Be kind to yourself. Blankets, comfort, lots of cuddles with your DD. Whatever helps, even slightly. I am thinking of you.