Help sos relive my overthinking brain

I was fooling around with a guy. I was clothes. He had his penis outside his boxers. I’m on birth control. This happened a week after my period week after my placebo birth control pills. He said he didn’t cum. And i would think I would know if it was otsideof my vagina cause we were dry humping. I haven’t had any symptoms of pregnancy. My period is suppose to come in 12 days. Ease my mind. I have nothing to worry about right? I know It sounds ridiculous. But I’m a paranoid person and over think eveything please people reply and tell me I’m okay. Sometimes I get nauseous but that’s when I think about getting pregnant and it makes e sick so I think that’s all in my head. Help we also didn’t have sex