Man I wouldnâ??t worry at all if I was you. He isnâ??t testing for drugs. He couldnâ??t tell anyone (including your parents) even if he did b/c of doctor/patient privilege. Hes also not going to stop being your doctor...you pay him money. That being said you should probably tell him about your use, doctors are there to help you if you donâ??t trust them why bother.