1) call a suicide hotline right now. You are worth saving, you can have a great life, you just have to believe and hang on.
2) Contact a battered woman's shelter. What your parents are doing is abuse. They can help you with getting a counselor and tell you what your options are.
3)Talk to your counselor. You can terminate the pregnancy, or chose to go ahead with it, if you are in fact pregnant.
4) If you chose to keep the baby, the counselor can help you break it to your parents and or find a place for you if your parents react badly.
You are not alone. This happens all the time, it's nothing to end your life over. My daughter was suicidal at your age too, but she got through it and now has a fantastic job and is happily married. You can have all this too.