Although I'm 99.99% sure this is just one of those "dur hurr look how handicapped I am" troll attempts in the case you're actually just a dumb kid I will help you out:
1. You cannot get herpes from jerking off
2. Unless your parents are fanatical theists they probably know you jerk off and don't care.
3. Blockland is full of kids barely older and barely smarter than you so they cannot really help you in regards to medical care.