Pics in file.rash from legs now to back,stomache months now,fever,fatigue, sever joint pain, left lower stomachs pain long time. advice on what it is.

See your doctor: It doesn't seem like this is a simple issue; you really need to see your doctor and have a check up;

See dermatology : You need to see a dermatologist to defined the rash. With The fever and systemic symptoms we would worry about infection or a systemic noninfectious process. We might consider vasculitis or other systemic disease but you need to see your physician