I have stopped taking evista for about 4 wks. I am having nightmares, bad dreams, sleeplessness and extreme muscle pain throughout my body. I am also beginning to feel depressed. I am wondering if I should go back on to correct these problems or if they will correct themselves in time. I was taking the prescription for severe osteoporosis. I am 66 years old and also suffer from fibromyalgia. Must I continue the prescription for my osteoporosis?