I looked up at the Wikipedia to find its meaning. Menstruation or known as a period is the regular discharge of blood and mucosal tissue from the inner lining of the uterus through the vagina. The menstrual cycle is characterized by the rise and fall of hormones, is triggered by falling progesterone levels, and is a sign that pregnancy has not occurred. Why am I curious to know the technical meaning? Because I feel my body is cooking. So, it’s been quite a while that I know that I experience perimenopause. Probably 4 years. There were some signs but most notably was menstruation. The volume and duration were less every month. But in the last 4 months, the duration is longer. The volume was not much…