Wanting to get pregnant and getting pregnant are two different things. How do you plan on supporting this pregnancy and then the baby. Work on your education, then meet a guy that you want to spend the rest of your life with, then go for it.
Having a baby this day and age is very difficult and expensive!
Enjoy your sleep and school now because once you have a baby, that baby comes 1st.

Definitely wait to find the right guy. No matter what, he will forever be in your life and you will have to deal with him so it's best for the baby if you can get along or be civil. When you do find a boyfriend, tell him your plans and don't leave him in the dark by trying to get pregnant, that's a sure way to get him to hate you forever.

I really don't think it is a good idea to find a boyfriend just to have a baby. You should find a boyfriend because you want to get to know him, not just so you can have his baby! Really, your first priority is education. If a boy comes along, then great, but don't just focus on that one particular goal.