i m male,27yrs. im problem having right side abdominal pain since last 2 years..before 5-6 month i have been getting another problem that is hard and dark stool but there is no pain in anus. my ultrasound , occult blod _ve, upper indoscopy and sigmoindoscopy is normal.. doctor other symtom is only loss of appitite. urine pass normally. no swelling in the neck..every day i drink water atleast 2 ltrs...doctor every morning stool not easily goes i must pus. its verry hard..doctor wht kind of problem is this...