Has anyone started provera who has a regular period?

Yuli • After 7 months, drugs and herbs, finally have a magical bean inside me!
I'm ttc, since March. I get regular periods from 34-37 day cycles. I started taking provera on cd 37 but still haven't gotten my period. I got a positive opk cd 30 and 31. I took Clomid this cycle so I think i ovulated late but my progesterone was 5.3 at cd33. Blood test for hcg negative on cd33 as well.