Cycle after egg retrieval

I had my egg retrieval at the beginning of the month and froze two embryos (wasn’t a candidate for a fresh transfer). I was told to call after two cycles to see if I can start prep for a FET.

I had my period 11 days after retrieval. Now I’m on CD 14 (normal ovulation time) negative opks, very low bbt with no ovulation pattern, dry cm and have been lightly spotting (alternating red and brown) for last three days. I will call my clinic as a last resort (one nurse there is particularly unhelpful and curt and is usually the one that answers the phone) but I’d like to know if this is normal? Did you have delayed ovulation after egg retrieval? How long did it delay you? Were you given any advice by your clinic?

Edit: broke down and called the clinic today. Got the nurse who told me the spotting is withdrawal bleeding from the meds, and that it’s common for the next cycle to be delayed. She wouldn’t say how long. I wish they would tell us these things ahead of time! So much of this process has been figuring things out on my own. Gr...