What a very stressful situation for you.
Ok I know you feel incredibly alone right now but there are many resources for you.
If you are pregnant, have you told the father, if you know who he is?
Planned Parenthood is all over the u.s., and is not all about abortions as some republicans believe, it can offer you support for whatever you decide to do. Also you can get free birth control pills, if you are not pregnant, or for further down the road.
You are almost back in school, or maybe have already started, go see the school counsellor immediately. She can maybe even help you with getting a pregnancy test.
I like an earlier posters question, do you have ANY non witness relatives? Even tho they may seem distant from you they care about you more than you know. If this was my niece, who is a witness and doesn't talk to me, I would let her come live with me as long as she needed. You have support that you don't realize. You ARE a loved person and you WILL live through this, and this baby may be the treasure of your life, if you are pregnant. If not, please be more careful next time, and you are very fortunate to realize the truth about this religion at such a young age.