Can someone help me understand??

I got my last period on November 28th it lasted all the way to December 3rd. I haven’t gotten it yet. I was messing with this one boy and we did t have sex but he did rub it on me a few times. You can get pregnant by pre-cum right? So I was thinking like damn could I be pregnant but it’s been like two weeks and no symptoms I was gonna wait until January 7th to start worrying but I need advice from a woman. My mom passed recently so I don’t get that type of help anymore😔 and my stomach had been cramping slightly, they will cramp like once or twice a day and I not bleed. this has been happening for like a week now. HELP MEEEE😫