Sorry, the second paragraph should read:
If you have pain or having problems with urinating, then you would need to see your doctor. Not sure if the doctor would do anything at your age for erectile dysfunction.
At the age of 13 you are far to young to be worrying about erectile dysfunction.
If you have pain or having problems with urinating, then you would need to see your doctor. Nor sure if the do anything at your age for erectile dysfunction.
Concentrate on your studies and don't worry about sex - you are too young to be worrying about sex.