Sorry for your recent BFN
Your progesterone level is actually quite high hence why AF hadn't shown at BT. Sounds like your FS had you on a fairly high & good dose of P4 support which would have been a great start if you had had a pg resulting. P4 naturally starts to drop if no pg results 10-12 days after ovulation.
In first tri some clinics like P4 to be anything over 30 to support pg. I think your levels were great for a FET.
HTH