Sexual intercourse eating my health or ?

Patient: My age is 21 am male every day i am feeling weakens in my body my bones joints are sounding every time they bent and my skin is going skinny everyday my hairs from head are removing and my eyes are going weak when ever i have sex my tongue goes weak and i feel dificulty in talking some big words and also feel dificulty to walk in balance i need a basic idea what the problem could be to me? I am having sex from age of12 is it is the base of all problem any advice please?

Doctor: