Im 22 years old. i think im starting puberty late. no facial hair until i was 20ish. my height is 5'5". my relatives are not short. can puberty occur this late? mustache is not fully developed either

Delayed puberty: Very unusual to not have mustach until 22 years of age. Better to be evaluated by endocrinologist once.

Highly unusual: This is highly unusual, if you have not discussed this with a physician, start there. You probably need consultation with an endocrinologist. This is a doctor that specializes in the hormone and regulatory systems of your body. A major consideration may be your ability to father children.