Hello, I Am Curious If I Am Pregnant Or Not.

Hello, I am curious if I am pregnant or not. My last period began 6-16. My average cycle is 33 days. On my period tracker it said that July 2-7 were my fertile days. I had unprotected sex on the 7th and have taken 2 at home pregnancy tests both negative. My period is predicted for the 19th and I've had cramping on and off for 5 days with 2 days of nausea, with slightly tender breasts.