Hello Dr. My Age Is 24 & I Haven't Beard

Hello Dr. My age is 24 & I haven't beard and mustache and I have very small penis just like 5 years old boy. Become light 3 inches tight and thick 1 inch. Comes very few sperm. I have very few hair in my underarms and in my private part. Very bad feeling and I fell I have pain in my chest nipple muscles. Please suggest Dr. what I do? to 'Ask a Doctor'. Please type your question here...