Of course, the amount of pain experienced can vary, and this can depend on different factors such as weather changes, stress, time of day and the like. Sometimes after poor sleep the night before, the pain is more intense. Naturally, if you haven’t seen a doctor yet, it would be wise to do so. But even if he diagnoses Fibromyalgia, there is no known cause of this malady. With a natural remedy such as Anatrin added to your diet, you can take action to fix any nutritional deficiencies that often go along with muscle problems.