Unless you're living 100% independently (not with your parents, paying your own rent and bills, and having health insurance) you have no reason to get pregnant right now. It's not fair to your parents, yourself, your boyfriend or your child.
You have years and years ahead of you to have a baby. Don't you want your baby to have everything he/she deserves? Odds are, you couldn't give them that. Don't put your desires ahead of your child's needs. Finish growing up and establishing your education. Get some stability first.