Okay So I'm Pretty Worried Right Now. I Don't Think

Okay so I'm pretty worried right now. I don't think I should be tho . Me and my girlfriend were messing around . And she had her underwear on but moved it to the side and started to rubmy penis with the clique. But I know I didn't not cum . I know that forsure. And my penis wasent in her vagina. But i don't know if I pre cummed. Even if I did should j be worried ?