I am unsure why you are having bowel movements so frequently. It would help to know the consistency of your stool and your diet. Diet has a lot to do with your bowel movements I suggest you see your doctor as he may want to refer you to a gastroenterologist.
Oh my gosh, same here! I have to go at least every 80 minutes and sometimes even more often!! Sometimes I think its because I'm constantly stressed, and when I'm stressed I go to the bathroom. But I'm not always stressed so I don't know what's wrong!