Looking young has nothing to do with what your body is doing. I too, looked way younger than my years, and menopause came for me with the exact symptoms that you describe. When your body begins to shut down the reproduction years, your hormones fluctuate, creating all of those symptoms. Why your doctors do not know that you are going through menopause is beyond me. All of your symptoms point directly to it.... my periods became irregular, flow was heavy, but next time light. Hair loss, weight gain, fatigue, brain fog, depression-like symptoms, and the worst hot flashes ever.... and now.... I am a menopausal woman like all those who have gone before me. there is nothing wrong with you.... your body is just changing. what you are experiencing is typical for someone entering into menopause.