
Just a tricky question... I have done two IVF cycles so far, both negative. I responded very well on both cycles and both times, the problem seemed to occur at implantation only. I was prescribed 200mg die of Prometrium after egg retrieval until the blood pregnancy test; I took two vaginal suppositories every 8 hours. However, on both my cycles, my menses started, respectively, 24h and 48h before the blood test (so I was still taking 200mg die of Prometrium vaginally). I had a heavy red flow that required me to wear pads.
I'm now wondering if the dosage and/or administration mode were not well adapted to my case. We will attempt our first FET in August and I need to make an informed decision about my meds. The nurse at the clinic told me that intra-vaginal Prometrium and injectable progesterone have the same efficacy; another seemed astonished that some women are prescribed both, she thinks it's far too much.
Now, an embryologist from the UK answered my questions on an IVF forum. He confirmed that intra-vaginal progesterone and injectable have the same efficacy. He said that, given that PIO hurts so much, it's better to have intra-vaginal pessaries anyway. He added that it's "very common" for BFNers to have their menses start even before they stop their progesterone. He added that I should have blood tests done to check my thyroid, my NK cells and a clotting screen before FET.
Guys, dear fellow BFNers (*hugs*), have any of you started AF full force BEFORE you stopped taking progesterone?
Do any of you know why I should have my thyroid, NK cells and clotting checked? (I mean, precisely; I already have a vague idea)
Thanks dears, and have a great day!

Sophie xxox