I had my period on the 27th of February 2018 and till on the 5th of March. On the 7th of March i slept with someone but i stopped him before his ejaculation. It didn't even take 1 Minute...only pre cum... I think i am pregnant cause today it's the 4th of April and i was supposed to be on my period on the 29 of March but still I'm not...could i be pregnant