stiff painful all joints, any qualified doctors please help!!!!!

hello there, i am male aged 27.i have cracking sounds in all my joints, it started about 4/5 years ago, since then it has got really worse with loud craking sounds and it has become very painful.
the joints feel empty,as the muscle/cartilage which is around the joint has started to disapear. i have dents like gaps in my joints severe in knee joints.
doctors and x-rays cannot find a illness apart from degeneration which is present.
the symptoms worsen after lifting and applying any sort of pressure on the joints even walking for a short time. after sexual intercoarse the joints feel cold and as if something has leaked out from them, causing more stiffness the next day. some of my bones have started to grow out.
i suffer from severe pains. one other point i did not mention is that i have been mastubating 4/5 times a week for the past 10 years. and each time i do this act it makes the pain worse and the following day i feel more stiffness and joints feel dry. i feel as if all this masturbation has caused my joints to weeken. some other problems associated with this are eye floaters, erection problems, greying of hair, testicle pain which then follows through the leg into the knee,ankle joints and also into the shoulder and arm joints and watery semen.
please help me as i am very depressed with this problem and its making my life hell