How can i kill an unborn baby without my health being in risk?

Not by yourself: You cannot do this yourself without endangering your life. Don't try. Get professional care now. If you don't have a regular doctor you trust, visit a Planned Parenthood or health department reproductive health clinic; or call a hotline; or mabe school nurse. Beware of services that claim to help but may stand in your way if you feel you must terminate the pregnancy. It's your right. Good luck.