they did put back 4 that weren't good quality after 3 unsuccesful transfers. At that point I had gotten them to agree to 3 of good quality before the 4th transfer. After the thaw I didn't have one of good quality so they agreed to four.
I take 1 cc PIO the first night and 1 1/2 cc's from the next day on.
I first started out w/ 1/2 cc and then 1 cc but my level on the day of the first transfer was low so they upped the dose.