The average age a woman’s periods stop for good is 51. As your hormones drop, you might notice things like dry skin, hot flashes, and mood swings. Because the lining of your vagina gets thinner and drier, sex could also be painful. If so, talk to your doctor. Plenty of treatments, from antidepressants to hormone therapy, can help. So can lifestyle changes like getting enough sleep and using lubricant during sex.