One reaps what one sows. You'll just have to live with being nervous and hopefully for your sake that fear will drive you to re-examine your life choices.
I'm 19 years old and never had ANY TYPE of std testing done before. I'm going to get a 7 panel test but I am nervous about the HIV test (of course). I've had sexual experiences with more than 8 guys. I am nervous, what should I do?