Ah hon I understand your worry, after the mc's I had and then it taking so long ttc I also found myself thinking about mc again. All you can do is relax as much as you can really. I found it helpful to have the HCG levels checked right at the start and again just before 7 weeks. I also had a scan at 7 weeks and another one at 9 weeks (after the common mc time) just to make sure everything was still OK. Then I only had 3 weeks to wait till the 12 week NT scan and I think I may have even gotten another blood test in between scans, just to keep me relaxed. I guess what I am trying to say is not to be afraid to demand BT's and scans ans space them out so that you only have a week or two in between your reassurance. Sticky vibes to you my friend, I'm sure everything will fine xo