Iam 16.5 years old boy.i have, nt night fall since 1 month and am not exited for any sex .and look like 13 or14 year boy. does my height grow.have acne?

Becoming a man: "Night fall" is a term often used by misguided people for the normal process of nocturnal emissions. They're healthy and you should enjoy them. You need to manage you acne with topical benzoyl peroxide as tolerated and prescription-strength Rx if not clear. Things sound like they are on course if perhaps later than your peers. Talk with your physician about any changes that concern you.