AM I PREGNANT?

July 15, I hooked up w a guy, he rubbed his hard erect penis on my vagina but I was wearing underwear (I was wet tho) and at one point I felt the tip of his dick touch my vagina. He didn’t cum and I’m not sure if there was pre cum. But I did get my period the next day. could I still be pregnant? I heard sperm lives in ur body for 7 days