If the dr wants a urine test, weed shows up even if u stopped smoking it a month ago. Not that you have.
I'd err on the side of caution & not mention substances unless he requests the above.
It'd be written in your file for life. God forbid you're ever in pain, no chance of much other than paracetamol or ibuprofen for you if you're red flagged as a illicit drug user.
Parents cannot be told anything, as, well, id hope you're at least
16, Dr - patient confidentiality.
Rtp