There could be many other reasons for a missed or irregular period. The menstrual cycle, controlled by female hormones, is the regular natural change that occurs in a female body. But an irregular cycle is a signal that something isn’t quite right, and it doesn’t always mean that you’re pregnant. High levels of stress hormones such as cortisol in body can interfere with menstrual hormone surges, resulting in delayed periods. 2) PCOS: A common lifestyle condition today, PCOS (Polycystic Ovary Syndrome) is an endocrine disorder that has many symptoms including irregular periods.

Source: Hindustan Times May 09, 2018 11:15 UTC