Can ovulation happen after starting progesterone?

Ka

I took letrozole and follistim this month but my doctor canceled my cycle on day 13 and had me start progesterone on the night of day 16. However, I started having all the signs that ovulation is coming including opks that are getting darker basically starting on day 14. Now I’m just extra confused. I guess if my test ever gets to a positive I’ll call my doctor but has anyone had this happen?