"First of all there is no need to worry, we have to understand that everybody has a different menstrual pattern. Abnormal menstrual cycle through we call it a 28 day cycle, it may vary from patient to patient, form 21 day to 40 days. So first of all we have to understand your menstrual cycle. But if you feel that you have deviated from a normal menstrual cycle, we have to find out what exactly is the reason. Almost in every patient, the first thing that we rule out is pregnancy. Second thing can be a matter of stress. Stress can be due to your job, change in place, change in school, change in office, it can be lot of weight gain or it can be weight loss it can be the impact of medicines like oral contraceptive pills. Then we have to rule out both the places. We have to rule out polycystic ovaries on one hand and menopause at the other hand. Lastly, which is equally important is the presence of comorbid conditions that can affect your disease or menstrual cycle