I have been masturbating in prone position for 12 years until March this year when I quit and switched to conventional masturbation with hand. I've had temporary issues with ED. My penis sensation has reduced at the shaft, while the frenulum is is still sensitive, while sex when I have an erection but I don't feel any sensation and can't orgasm, is this because of my past masturbatory habit or because I have a mild case of phimosis? It's got me nervous as I'm not sure if this cure or not ? I have no history of diabetes or high cholesterol. Please need help