I have been having diffuse arthralgia, low grade temp, and fatigue for the past month. I originally thought I may be developing rheumatic fever? prior to onset of above symptoms, i had an episode of a sore throat, lasting about 3 days. this cleared and i developed productive coughing, sinus pressure congestion. i saw a doctor and was diagnosed with sinusitis/ bronchitis, with a negative strep culture from the oropharynx. was placed on omnicef. I returned to the doctor with worsening of the arthralgia and fatigue. I have a slightly elevated ESR and CRP. My ANA is still pending. What am i possibly looking at?