9 day late

Getting stressed, Idk what is happening. I get my cycle pretty close to clockwork at 29 days with exceptional 5th week once a year in my cycles.

But I am 9 days late, BFN on tests.

I don’t feel preggo symptoms except my AF is missing and maybe AF symptoms on and off. Saw my OB for possible BV and we agreed to give it till this week than do bloodwork. (No known causes, like weight, No diabetic/no PCOS/ no BC contribution)

I always see your not out till AF shows up but how accurate is that?

Is it possible to be BFP without a BFP hcg?