The RE's are so quick to blame BFN's and early losses on bad embryo's. So maddening that you have been through so much and it has taken this long for you to get answers. I had one early DE m/c after a fantastic initial beta over 400. RE absolutely refused immune and clotting testing outside of thyroid. Then I switched to the SG and the current RE felt the same way. I'm in the guarantee program. I'm willing to do first cycle without add'l testing but if it doesn't work I will not take no for an answer. There is another RE at SG that is willing to explore these issues and I will demand a switch to her service. I hope you next cycle is the one that gives you your miracle and none of this nonsense will matter in the end.