Is there something wrong with me?

Well I'm feeling down - no change there. Is there something wrong with me? Am I lacking testosterone? Is my puberty messed up? Well I'm 16, only 5 foot 5, got hardly any hair on my face - well only the "bum fluff mostache hair", no side burns. My voice hasn't "fully broken" well it's higher pitched then all of my mates. Also I've still got a face full of acne - which I've had since I was 10, I've been to the dermatologist, I've tired everything? I'm feeling quite fed up to be honest. :(