Joanne
For medicated fet, it depends on when you start progynova , could be day 2, 3 or 4.. Usually is day 4. The first scan can be from day 12 onwards, could be day 13, 14 etc. so the nurse will tell u when to go. Better not count from first day of AF to estimate ET, bcos it all depends on ur lining . As long as u hit 8mm, u pass and proceed to ET. Usually it's 3 days later. For eg, if ur scan on Wednesday hit 8mm, ur ET is likely to be on Sat. Just an estimate, not easy to plan leave. My medicated cycle took me 26 days to get 8mm bcos I'm too stressed. So u must try to relax . All the best!