IUI is tomorrow

I had my last u/s and b/w yesterday. My largest follicle was a 20, which is still good. The next largest was only 13, so nothing else is really in play. My E2 went up (290) and my lining thickened some (6.7.) Neither are "great" but are much better than what we expected. Compared to last cycle, my E2 is higher, but my lining is thinner. I triggered last night, and the IUI is set up for 8:00 tomorrow morning.