I have the implanon implant for 9 months now and I had unprotected sex and the next day I started medication that cancels out my birth control. I'm only 18, please help!!

Impossible to make any sort of meaningful comment.

Anytime you have unprotected sex, there's a possibility you'll get pregnant. I'm not saying that you are, but no birth control is 100% effective. The one way to 100% safe is to use abstinence.