Freaking the hell out, send help!

Soooo, my boyfriend and i had a passionate night, last night. Im a virgin, and there was no penetration, just fingering, masturbating, oral and grinding.

At one point, i was grinding on him, naked, he was wearing boxers. If there was cum in his boxers, is there a chance to get pregnant? Or could it just happen through penetration? I must remark that i was suuuuper tight cause i was nervous, so nothing got inside of me. Please please help me calm myself down. I’m kinda freaking out now.