Emotional trauma and stress. Muscle Forge XPeople with insomnia or other sleeping disorders such as restless leg syndrome or sleep apnea. to Fibromyalgia are as follows: Muscle pain and fatigue are the most common symptoms of fibromyalgia. Poor sleeping. Frequent urination. Dry mouth. Headaches and migraines. Feeling of pain, burning, aching, and soreness in the body.