Post sexual encounter...

Help! My boyfriend came in me last night (I did tell him it was okay) but I wake up this morning and am having cramping. I finished my period Saturday, and started my birth control again Sunday. Wednesday night was when he came in me. He does it “frequently” and never have any issues. Does this mean I’m getting pregnant? I feel really dumb for asking this but am just clueless and I don’t have my period for another while. Thanks ladies.