Relax... Your mouth does not have the vasculature that would allow you to bleed out. By this time some healing should have formed but it would still be a raw wound. The best thing you should do is press gauze on the wound, as well as put some alcohol, just to keep out infection. Just see your doctor in the morning.
Your mouth if anything should be fine.
Find a new hobby to start and maybe do a self transformation and create a new image of yourself. Try to always think of the positive things in your life
both parties come to an agreement were they basically meet in the middle and both get a solution they can agree on
I think it would be to alert the parents. for his protection, it shouldn't be secret. The nurse shouldn't honor the confidentiality of the situation.