Makes perfect sense - I started noticing that at 9DPO certain smells really made me feel like puking. I was much hungrier than normal and would wake up absolutely ravenous - not matter what I'd eaten the night before. I'd be hungrier than normal during the day, too.

You're also correct on the OHSS thing - It's bloody scary! I had no response to 150IU initially, so my FS jumped me up to 300IU for a few days - then I was rapidly being pulled back and ended up on daily blood tests because my levels were so high. I was only given a half-strength trigger shot. We got 26 eggs, and ended up with 4 blasties in the freezer. Three still waiting to be used after our first miscarried (unrelated problem, I'll be on drugs the whole way through pregnancy now to help prevent it happening again). It took me three weeks to recover, and it was only my stubbornness that kept me out of hospital - Not something I ever want to go through again!

Anyway - I read somewhere that with a woman under 35, a day 2-3 transfer has only a 20% chance of working. Go to blastocyst, and that chance jumps up to 42%. I think you've got a very good chance of this working, and I'll be keeping everything crossed for you.

BW