Has FS been conducting US at the same time- is your lining thickening?
What did the FN say when you said you never ovulate before CD16?
Why I ask this, as my when I ovulate it's all over the place- no norm( from
CD 11- upwards). Last cycle with a BFP (m/c though, nothing to do with late ovulation ) in the end I was BTing every second day, I think I ended up around 10 bts( pin cushion).
I ovulated at around 45 days can't remember the exact number but it was phenomenal and I thought it would never happen and FS just kept saying- hang in there. It was in the April/may thread. He was right.
Our bodies do crazy things when it's being watched, look at the women on here wanting their Af's- the witch doesn't show on time, just to show she is control.
Does your clinic open on weekends? I would call them and tell them what's happening. And ask for a BT & US (my clinic emails BT request form) I would keep testing, take photos if need to,(OPK's give me false readings sometimes) If you are right and you ovulate in 3 days, depending of the age of your embie you still would be able to transfer, and there is still time to defrost whatever way your clinic defrosts.
I'm just really surprised, your FS has done this..