Pregnant??

Had unprotected sex on the 1st, 2nd & 3rd. Just right after my period ended. We have been trying to get pregnant but not sure if anything has happened. Period should start in 3 days. Took many tests since then but all negative.. I’ve been eating a lot lately. Craved some, and now I’m cramping very badly! Had light bleeding after sex on 3-4 days ago.. not sure what this means? Could it all just be period symptoms? Also, not usually lactose intolerant but after eating ice cream tonight (1/22) felt sick.