 [ Symptoms ] what can cause a dull menstrual like cramp pain on right side of pelvic area  for the past 3 to 4 days i have been having a menstrual cramp like pain but it is only on the right side it is not a severe pain but enough of pain that after 4 days it has worn me down and made it hard to do anything i have taken perscription ibprofen i had left from my gallbladder surgery and it doesnt seem to help if i put a heat pack on the area it helps but as soon as i get up and move around its right back to hurting again im absolutley miserable what can cause this [ Disease ] no i do not believe that the flu vaccine causes narcolepsy as a matter of fact the cause of narcolepsy is really idiopathic not known