Low grade fever, fatigue for 5 months. Rf 54, +ana, +blood in urine (comes and go. Rheumy ruled out lupus, ra, etc. Have appt. With urologist. Ideas?

Infec, stone, growth. It could be an infection, a stone or a growth. Nothing to do but walk it through. Sorry for the trouble, but get it done. You're on the right track.