Cramps after first time

JJ

I lost my virginity a couple hours ago and I’m only 15 and the guy was huge (we are the same age) the condom broke but he took it off and we kept going and I made sure there was no precum and he did not cum inside me at all. But I’m having these really bad stomach cramps at the moment and I was supposed to get my period any day. Does anyone have any advice? And should I be worried about possibly pregnancy even if there was no pre cum or cum.