Help me!!!

Last night me and my boyfriend fell out, because of some little things, I told him that we would go our separate ways in the morning. He started going mad and everything then he got dressed and locked me in the house for 3 hours and then came home and we had sex after, but when we did after that he said if you get pregnant then you can't leave me. Which is scary because my period is due in 2 days and I haven't had sore boobs or haven't had any period cramps like I normally do. We always have sex and never use a condom. I would love to be a Mum I've always wanted to be a mum, I'm really scared because this has happened to me before but my bestfriend has her period and I normally get mine before her? So is it possible that I could be pregnant? Because the last 5 days we've been having sex like 5 times in one night. All times he's came inside me, he went deep some times and other times not so deep. I just want to be happy but I can't. When we were on a break he had sex with another girl. I'm really in love with him