One night bledding ? Help

My Af was suppose to come yesterday i usually know because i start cramp and want sweet. But i feel funny i can't even think eating sweet makes me feel sick. My fiance and i been trying never got pregnant for 3 years. Last month i had a long normal bleeding. So my fiance and i had sex last night i didn't want to because i wzs scared my af would show i notice i was bleeding after but it was light nothing heavy when i pee nothing came out only when i wiped but that was last night this morning nothing and till now nothing. I am not even going to get happy ill wait couple more days if it doesnt show ill test. Anyone experience this?