help...?

Does anyone else have gas pains after their period mine ended 2 days ago? On the day my period ended my bf and I were messing around and I touched his buldge over his pants (suit/tux) pants could precum get through that onto my hand and then in me through my leggings I rubbed myself for a few seconds and at one point his penis was out of his pants BC he pulled them down he may have touched it for a few seconds if there was precum it was very little but should I be concerned about pregnant Ik it's stupid but I'm worried... someone please help