I have had this for a few days now on sunday morning i had to take imodium, for obvious reasons. Since then i havent been so have come to the conclusion i am constipated , but now i have had a steaming headache all day as well as the back pain, I have had a look on several sites to figure out what it can be and they havent helped, i just spoke to a friend who coincidentally is a nurse she seemed to think it could be my kidneys! so i cant decide if i should go to the docs, or wait a bit longer see if nature takes its course! Anyone have any ideas??