Hi I am 22 and my testicles are very small. They have never grown and my voice still changes pitch. I can't even grow any facial hair and I'm quite short my 14 year old brother is taller than me. Is it because I didn't sleep when I was younger?? Is there anything I can do about it now. Do I have Low Testosterone? I am also hypothyroid and am on 25 Levothyroxine.