Hey Melissa
I don't know that I can be particularly enlightening. I do EPU tomorrow. Fri (after 9 days on Puregon) I was at 7783 (E2) and yesterday I was at 9861 but they are still happy (with a half dose trigger) for me to get the pick-up. They did say that if the OHSS flared they'd freeze all until I was recovered. Friday they were talking about coasting me if the E2 was higher.
Good luck- and may your oestradiol come into line!