Late AF, and 13dpo with BFN. Am I most-likely out for this month?

Valerie

I am 13dpo, and two days late for AF. I was CONVINCED that this was my month because I always start my period like clockwork, on-time. But nothing but BFN of the past few days that I've tested? If I am not pregnant, I wish AF would just start so I can try try again! The thing is I don't have any symptoms of pregnancy or AF.

Anyone get a BFN at 13dpo, and later get a positive? Am I most likely out this month?