Thanks for that info. I'm at Melbourne IVF - and I looked to see if they cover this on their website - it says "As a responsible measure, to avoid the dangers associated with multiple pregnancies, at Melbourne IVF our policy is to transfer no more than two embryos, except in rare cases when three may be transferred. For this reason our multiple birth rate (13%) is lower than most other clinics. Almost all of these are twin pregnancies, with triplet pregnancies a rarity."

So it seems like 3 is a possibility, but they have a strong preference not to do 3. I'm sure it's up to the particular FS who would have the best sense of the patient's circumstances. I haven't bothered to call my FS because I'll be seeing her for my scan on Thurs and will ask then ... also, it may end up being irrelevant.