Sir, I Am Suffering From Penis Related Problem From Last

sir, i am suffering from penis related problem from last two month . during sex an injured occur in the right side of head of penis.after that the area became little swollen with pain. i have visited so many doctor ( veneriologist/ surgeon/ urologist ) ,they had prescribed so many medicine. one of the urologist said that my problem is not curable, one of the urologist said that nothing serious. the pain reduced but swollen area does not became normal yet and i am very worried about it . what should i do , pls help...my age is 36 years.