Should I Wait?

Tomorrow I will be 17dpo.. my SO and I had unprotected sex the 29th.. I've had some back pain, slight cramps (not AF cramping), nausea, and at first it wasn't too bad but now it's gotten worse but these boobs of mine are so tender.. 😣 noticed that I'm having to pee a tad more than usual..

I took at pregnancy test 13dpo and it was a BFN, AF is 3 days late.. I'm trying to wait until Saturday to take another test and to see if AF shows up. Idk, all I know is i am driving myself crazy!