What will a general practitioner do if i have harmed my self?

Depends: What harm have you done. A general physician will take your history, examine you and treat accordingly. Testing may be necessary and procedures may need to be done. Hopefully you have a trusting relationship with your pcp and cand discuss issues with him or her and not worry. I hope you have not harmed yourself badly and that you seek care.

Self harm: The doctor will likely ask you if you have thoughts of killing yourself. Your wounds should be checked to see if basic medical care is need. A referral to a psychologist or psychiatrist is likely.