I used to massturbate without ejaculating for a few hours (1-6h) after one time when i think i did it to much,and when time came to have sex i noticed i dont realy get horny anymore and after i finish once i cant start again(used to finish 2-3 times?

Sexual function: Abnormal or bothersome sexual function issues are very difficult to evaluate on a distant forum or even to give educated guesses. See your doctor. Depending on more details about symptoms and exam, s/he might refer you to an endocrinologist, urologist, sex therapist, psychologist, or other expert. But probably masturbation isn't the cause. Good luck.