Friends of ours conceived their DD through IVF (not sure how many cycles as they don't like talking about it). The mother has PCOS and would get AF maybe twice a year. They were just starting the ball rolling on their first FET to TTC#2 and found out they were pg naturally.

Their Dr said it was a miracle. The Dr also said it almost never happens, but that she was the third patient that week to have it happen. Go figure...