What do you suggest if my penis hasn't grown and my voice is like a little kids voice can anyone help me. should i go to the doctor?

Hypogonadism: You certainly should be evaluated by a physician to evaluate for an endocrinological (hormonal) abnormality. There are a number of possible explanations for your observations and a physician needs to thoroughly evaluate you. If there is a hormonal deficiency, hormone replacement may significantly improve your quality of life and prevent future health issues such as osteoporosis.