18dpo 3 days late for af and still bfn's

Shante • Hi my name is shante brown and fiancée name is tyreese we have been trying for baby #2 for about 3 months now. It`s been a rough road but hopefully soon we`ll get our bfp! 😊😊
I am currently 3 days late for af it was due 8/11.I am 18dpo I have taking countless pregnancy test because I'm a poas addict and still I'm getting bfn's. Has anyone else experienced this? Am I out this month? Ugh! I need some advice.😕