I wish I could tell you how long this will last. I am 51 too and really having bad problems for the last 6 months or so. I had many of the symptoms off and on for years, but only for short periods of time and only one symptom at a time. At 51, a whole group of per-menopause symptoms hit me at one time! Ovarian cysts, heavy non-stop periods, nausea, headaches, weight gain, anemia, insomnia, health anxiety just to name a few. The month hasn't been terrible, but I'm waiting for the next round of problems. I take comfort in this board knowing I am not alone in many of the symptoms. Hope this helped you some. You will always find comfort here! Take care, Ann