Sorry imnot I got distracted by Just! Welcome.
Your history sounds almost identical to mine. Two DCSs, very ordinary and straightforward pregnancies, last one born on Feb 2012. Five miscarriages, four early, one missed. Anyone who calls any of them a CP will get dagger eyes from me.
I often had very low hcg, so slow increase in hpt lines, and empty sacs developing only to MC later. I had a barrage of standard NHS tests and was prescribed progesterone and aspirin (no harm) until I had a potential clotting issue, which wasn't, and was prescribed heparin by my consultant.
By then I was exhausted, scared and depressed. I decided to throw everything at this last one as I felt I only had the energy for one more go.
I saw Prof Brosens at Coventry, who did a uterine biopsy for NK cells. They came back as normal, but in the meantime I conceived again, and with treatment am currently 20 weeks with a healthy baby. Still petrified, but very happy!
As mentioned yesterday, there is some interesting research into selectivity, and I certainly see myself in that field. I am super-fertile, and from your history, sounds like you are too.
I'm also old, at 42 really pushing it to the limit, as are quite a few of us here, and as everyone else has said, the support here is fantastic. I've been through three of my MCs on these pages, and my current pg, and the support is unwavering. I definitely second the need for that emoticon Baking!
Sorry, that was an essay back, and still only a very very potted version! Please feel free to ask us questions, we hold a great deal of collective knowledge.