Your menstrual cycle is driven by sex hormones. The female sex hormone oestrogen ensures the buildup of the uterine lining in the womb, which is essential for pregnancy. If fertilisation does not occur, progesterone levels drop, causing the lining to break down: this is menstruation.
During menopause, the production of oestrogen and progesterone in the ovaries gradually decreases and fluctuates significantly. You become progressively less fertile, eventually leading to the cessation of menstruation. However, before your periods stop entirely, many women experience changes in their menstrual patterns due to fluctuating hormone levels. For instance, you might suddenly have a shorter cycle or menstruate for a longer or shorter duration. It’s also possible to go for a period of time without menstruating. These hormonal fluctuations can cause your menstrual pattern to change in various ways.
Many women not only notice changes in their menstrual cycle but also experience other menopause symptoms, such as sleep problems, feelings of restlessness, and low energy. Some women even experience these symptoms early in perimenopause, before noticing any changes in their cycle.