It is possible to have two colonoscopies in a week, and you can have a colonoscopy whenever your condition requires it. The colonoscopy will not affect your health, only that you need to perform bowel preparation before the colonoscopy, so it may be hard work. Because of the need for constant bowel movements, it is possible that people who are not in good mental health may become dehydrated during the process of bowel movements. Therefore, as long as your body can tolerate it, you can have several colonoscopies. It is also possible to prepare the intestines with an enema and then perform a colonoscopy, so consult your gastroenterologist for details. The colonoscopy is performed through the anus, and the scope is inflated and viewed as it passes through the anus until it reaches the ileocecal region. The scope is then slowly retracted, and then carefully observed and pictures are taken. If lesions are found in the mucosa of the intestinal tract, tissue can be taken for pathologic examination or endoscopic procedures can be performed.