How far along are you? Have you been to the doctor? When are you due? Do your parents know? Will you continue school? Where will you live? How will you support this baby?
What about HEALTH insurance? Going to the doctor every month during pregnancy and delivering a baby is really expensive - you need to check with your parents if you are covered under their plan or if you'll need to seek out some medical help.
I'm going to assume your parents do not know or you wouldn't have such a cavelier attitude about how you two wanted to have a baby. Do not assume they will be pleased. In fact, they are going to be pretty angry about it. Your boyfriend is old enough for charges of statutory rape to be put against him also - so you two may wish to be prepared for that.
And welcome to motherhood. I've been a mom for 22 years (since I was 16) and you've just stepped onto a path I wouldn't wish on my worst enemy. Good luck!