I am suffering from low grade fevers only in the morning. My temperature is 99.5 to 101.1. This has been on going for several months. I also wake up with strong aches in my joints, especially my knees, neck, shoulders, back and wrists. Throughout the day I'm extremely fatigued. I sleep at least twice during the day. My temperature is normal by noon. Other than that, I feel fine. I've had blood work for ANA, and other rheumatoid factors and they've all come back normal. Any ideas?