Need a little help....

Bre

So I had a 7cm cyst removed from my right ovary on October 10th. I had some spotting for a few days after the surgery. But now I’m 20 days late with no sign of AF at all. I’ve got the cramps and headaches like I’m about to start and everyday I think I will. But nothing. I’m so confused. BFN on Oct 26, Oct 29 and Nov 10. Any advice? Anybody had any similar experiences?