So...I have been poring through medical journals to understand uterine receptivity and while it's an elusive concept, it seems that a lot of factors including the thickness of the endometrium (best between 8 and 11) and the blood flow (a triple line pattern on ultrasonography) are non invasive ways to check out uterine receptivity. In other words, there are 2 main factors that ultimately determine whether or not the pregnancy will result after an ET --they are the health of the embryo and the receptivity of the endometrium. The only sure way to check the endometrium is to do a biopsy. The only proof of success is a positive pregnancy test.
I'm 44 and am in the 2ww phase--had an eSET --a blastocyst transferred and will know this weekend!
Sending good energy and positive vibes to all the brave and determined women out there!
and try not to drive yourself crazy. I just had my test today and got a bfp. mine never made it to blast but they seem to have stuck around on the inside. this was after 5 failures own egg and one DE. Good luck and warm thoughts sent your way. Oddly, I'm more nervous now with one good beta... now it seems so possible I don't want it to fail and want to tell everyone -- but know I shouldn't so I sit and try to remain level until it is confirmed by more tests. good luck!!!