What a Roller Coaster

It's all I can do over the last few days not to lay down and never get up again. Starting last Thursday on Day 11 of our DEIVF cycle, our donor's E2 levels dropped suddenly. My RE called with this news and of course I was freaked out. Friday he called, and the levels dropped again. He wasn't optimistic about continuing with the cycle. He left it up to us if we wanted to keep going. We decided to "Hail Marry" it and keep going. If we cancelled we would have to start all over, find a new donor, pay another donor fee, and more drug costs. Saturday our donor's E2 levels were back up to a good number, so Doc triggered her with a "Lupron Trigger" which I had never heard of; to prevent OHSS. At the retrieval on Sunday, the first 5 eggs he retrieved were very immature. He decided to give her an HCG shot and postponed the rest of the retrieval until the next morning.
During this time, I'm beside myself. I don't understand how this could go so wrong. I mean this is a 24 year old healthy and fertile gal.
After the retrieval on Monday, Doc calls; they got 10 more eggs that were still immature, but not as immature as the 5 from the day before. Good news, 2 of the 5 from the first retrieval matured and was ready to be injected for ICSI. He said the lab would watch the 10 from that day and see if they would mature on their own.
This morning, Doc calls and says, "The news keeps getting better." Music to my ever sensitive ears! 11 eggs were mature enough to be injected, and overnight 10 fertilized! Oh my god, oh my sweet baby Jesus! Thank you. I have been on a crazy and terrible roller coaster during this process and it's not over yet, but I am more hopeful now. We went from all eggs being very immature, and the Doc said he doesn't see them mature in the lab from the stage they were at very often, to 10 fertilized eggs!!! Our transfer will either be this Thursday or Saturday depending on how our embies look as the week progresses.