@insidehealthlab4: What actually happens inside your uterus during your period? Each month, the lining of the uterus thickens in preparation for a possible pregnancy. If pregnancy doesn't occur, hormone levels fall, causing the uterine lining to break down and shed through the vagina as menstrual blood. During this process, the uterus contracts to help expel the lining, which is why many women experience cramps. Watch this video to see what really happens inside your uterus during your period and understand the science behind menstruation.#MenstrualCycle #PeriodHealth #Menstruation #WomensHealth #Uterus