Me& my boyfriend had sex for about 7 -13 minuets, it was my first time, there was no orgasm, and it was unprotected.. a little while before, i had given a hand job, and he barely ejaculated  on my hand. I'm really scared that i might be pregnant. My period should be coming soon, like this weekend, i take track of it by the moon, every other full moon is when i have my period.