I would keep going back to the doctor... been to an endocrinologist yet? ... I have had hot flashes for 10+ years (am now 63). In the beginning they came every 45 minutes... (face red, sweating, cold - the works)... doctor put me on HRT... I felt much better but two years later had breast cancer... surgery and more medication... no estrogen now so still have hot flashes but not as often and not as severe... hang in there... read what you can, see your doctor, keep breathing...