Help please

My boyfriend and I are both 16 soon to be 17 and we have unprotected sex, and I've told him to wear a condom so we won't have to worry about pregnancy cause were so young but he ignors me when I tell him, and so he uses the pull out method but that doesn't always work, and so through out the weeks I've been waiting for my period I've had pregnancy symptoms like sore nipples, cravings, pelvic pain, mood swings, nausea etc. 
so I asked him what would he do if I was pregnant cause we have unprotected sex and his response is I wouldn't want to keep the baby cause were to young, I plan on making something of myself and I don't want my kid not having anything but it's your body do what you think is best I'll still love and support you, so the week of my period it never came and we had rough sex then later on the night I was bleeding blood clots and then it stopped and my period usually goes on for 2 weeks could it have been a misscariage? Can you have a misscariage by having rough sex 
Sorry for the long story  And sorry if it's a stupid question 

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