Finger joint swelling/redness, fever, fatigue, back shoulder hip pain/stiff and muscle aches. ANA pos, RF neg, other tests normal. Possibilities?

Several things. In young women finger swelling,fever,stiffness,muscle aches ,other joint pain can be the onset of lupus,Rheumatoid arthritis (RA test does not have to be positive). Other less common connective tissue diseases and even some infections can do this. A Rheumatologist should be able to work this out.Not all tests are positive early.