Ari, I just posted in your blog!

While mine was an ED not FET, it was HRT supported and I took pessaries and crinone until 13 weeks as my P4 levels were all over the shop (my clinic did close P4 monitoring for all patients, something Monash as not known for). Crinone isn't great to measure as it doesn't show up on bloods. I knew that P4 was fine though due to terrible reflux. I took prognova until about 10 weeks because my FS forgot to tell me to go off them at 6 weeks which she said is normally all you need as your own levels take over.

It was an expensive time as pessaries and crinone are so xxxy and I was on 6 pessaries and 4 crinone a day and its all private prescriptions! That is the extreme case though.

Sending you all the best, I'm feeling very excited for you.
xx