Just updating this...the cycle during which I posted this thread, I ended up with late onset ohss. It was only mild (still unpleasant!). I only got three eggs in the end...

Anyhoo, on another stim cycle now. Had BT and scan yesterday (cd11 so 8 days of Stims). Only three follies but my estrogen was almost 4000. I have four more days of Stims. The nurse said my estrogen is high. Interestingly enough, my progesterone is high too. While my LH is base.

Wondering if the high e2 is somehow contributing to BFNs ?