Sore muscles, joints, back ache, nerves on edge, headaches sometimes, IBS symptoms, low appetite, making me confused, stressed, depressed, anxiety?

Fibromyalgia. You are describing typical features of fibromyalgia. This can also include bladder problems and a foggy sensation. It is associated with poor sleep ( usually waking up every 2 hours through the night). These symptoms can also be caused by stress and depression. You should see your doctor for a definitive disgnosis.