My period came early last month (February) and yesterday (March 5th) was the day I thought it was meant to come as it came on the 5th last month so it is late by one day atm, me and my bf had unprotected sex like 2 weeks ago but he didn't cum at all or when he did cum he pulled out 2 mins before and masturbated over me so Ik that he didn't cum in me. But it's scaring me because it's late now but my cycle is usually on the 12th most months, can it go back to normal or? Please help me because I don't want to be pregnant!