Hey!
Welcome to the site!
Go online and research the type of abortion that you are thinking about having.
Abortion is painful. It will be physically painful when your body gets rid of the baby, it will be painful to the baby, and it will be emotionally excruciating later.
Think about it, if you have the abortion now and no one finds out. You will wake up every morning knowing that your belly no longer holds the little life you conceived. You will wonder what color eyes your baby would have, you will never get to see it's first smile or hear the first happy gurgling sounds it would make. You will never get to run your hand gently over it's little head or kiss it's cute little lips.
You will feel all of the guilt of having killed your own flesh and blood. Even if everything goes off without a hitch and you are able to have children later you will look at them and wonder what your first baby would have looked like. You will think about it EVERY DAY!!!
But if you decide to have the baby you can still finish school. If you give the baby up for adoption you can have a normal teenage life.
Please think about it.
Hugs!