20DPO NO AF ALL BFN

Naomi
I'm 20 days past ovulation no AF and have had all BFNs; I haven't tested in 3 days! I'm having these niggles in my lower abdomin and slight breast pain, keep thinking it's my AF going to show but everyday nothing! What to do???? Anyone else in this situation? Or had all BFN's and then finally got your BFP??? Please comment x