8 days late and NO bfp

Acacia
What is going on? I haven't been late in 5 months. I was having regular 30 day cycles. Now I am 8 days late, have had three negative tests, and AF is still a no show. Anyone else in this boat? I'm trying to decide whether or not to go to the doctor, or wait it out and blame it on PCOS. Either way I guess I'm definitely not pregnant...