15 dpo AF is a no show

nikki

So today I am 15dpo. AF was supposed to show yesterday but she hasn't shown. I felt cramping yesterday like she was going to show but still nothing. I am dry as a bone down there. My breasts are tender (they usually are around af time so I dont read to much into breast tenderness) and cramping is gone for now. I took 2 tests yesterday and they were bfn. I decided not to buy anymore tests because I was sure I'd get AF so I didnt have a test to take this morning. AF is always on time and sometimes a day early so I dont know how to feel. I don't want to get my hopes up but at the same time it gets me a little excited. Should I go get another test and take it or should I just wait. I'm not sure I have the willpower to wait but I can sure try lol.