I think a lot of your questions are going to be answered by me by "that depends." Sorry!
When do the meds begin? That depends on what protocol your doctor puts you on. You could start lupron on day 21 or later???
What meds do you take? That depends. I took a lot of estrogen. Sometimes you do BCPs first and then lupron and then Estrace pills either orally and/or vaginally. Sometimes some people don't. Some cycles I took the delestrogen shots and the estrace. Some people do the estrogen patches.
How many do they suggest thawing? That depends on a lot of things. Grade, day frozen, your age, quality at time of freezing, how many you have to thaw, etc...
How many are suggested to be transferred? That depends. Age, quality, etc., all factor into how many transferred. For example, my first FET we were still only transferring two. By my sixth FET we transferred five.
How many US do you have? That depends on your RE. They all vary by what they think you need.
How many blood draws?
ANY help would be wonderful!!!!!! Sorry I'm not much help!
You'll be great though. FET is way big easier than stimming. Still alot of stress and hormones involved, but they are pretty successful these days. My FET was my only successful cycle.

~m