I think the failures with my OE were clearly chromosomal, but I am now pretty convinced something is messed up with my uterus. I met with my RE yesterday, and the other recipient in the split cycle got pregnant and her betas look like it's probably twins. I've had a total of 7 blastocysts transferred and probably at least 3 of those were excellent quality, and my uterus has killed them. My betas have been 0 - not even a hint of implantation. I am very confident in the abilities of my RE and the embryologist -they're actually one of the very tops in the world so that just leaves me.
I'm afraid that my uterus must have been damaged somehow by the surgery for my 17 week loss. I'm going to go forward with some testing for that . I did have a hysteroscopy a couple of months after the surgery but am wondering if scar tissue may have formed later so will be trying hysteroscopy again. My RE also mentioned the e-tegrit.y test. These tests and immune and infection is what I think I will check into and depending upon the results decide to do going forward.
thank you so much for your input. I do really appreciate it!