Normal period for a while now 5 days late bfn still

Arita
I got off of bc beginning of August and since then been having a regular period. I've been having bad cramps the last few days. Now I'm five days late and took 1 pregnancy test first day of missed period and 1 this morning,both bfn. Help,should I wait longer for hcg levels to get higher for bfp? Or is period just really late?