Where is this bitch at!!

As you can see, I've missed my whole period. Which is very uncommon for me. I took a hpt yesterday with fmu and got a bfn. Same for the tests I took all last week. I feel no signs of AF showing honestly. How long should I wait to test again? I feel that if I were pregnant, HCG would be high enough to register on a test but idk lol. I'm trying not to get my hopes up. What day should I test if AF doesn't show? Has anyone ever tested negative and then gotten a BFP after waiting a few days like this?