So I haven't posted on here for a short while now. I had a fresh icsi cycle last August. 23 eggs obtained, 16 fertilised, 6 five day blasts frozen. I had none transferred due to mild OHSS. I had my first FET this May, transferring one blast which thawed fine. This resulted in a failure. my AF arrived 11dpt. I was only on Progesterone. DR monitored me and womb lining dropped to 4mm out of nowhere. My womb lining has always been on the thinner side, not ever being thicker than 8.5mm, but DR says this just must be how my body naturally is. So, I went on 3 x Progynova per day plus 1 x Crinone per day from day 1. DR monitored me up to a week before transfer, I had 7.5 lining, but I had a triple line and womb had a good shape so the transfer went ahead. We thawed two embryos which both survived and recovered well. I had the transfer on 14th August. Its now 13dpt and I have had a BFN. No AF but I guess it willl arrive now that I have stopped my meds. Certainly will be asking for answers. I am 26 and partner is 30 and in both transfers they have been very confident in my embryos yet they are not inplanting. I am starting to think there is a problem with my side that hasnt been diagnosed yet. The only thing I have is very mild PCOS.....virtually nothing. I ovulate naturally and the only issue I have is that my cycle differs each month. Usually its around 5 weeks but can be 6 or 4. My hysterosalpingogram came back normal, blood tests normal, high AMH. I dont think I have had a hysteroscopy (I will have to check as not sure) but I dont know what this could reveal? I dont have any symptoms of anything underlying like polyps etc? Then I started to think maybe I have killer cells or maybe the embryos are abnormal, both of which you need tests done for this but they dont usually worry about this until you are plus 35....seems like every hospital and DR works differently and has a different outlook. Any ladies been through something similair? Surely this cannot be good?