A 50s F with hx RA on methotrexate cc fever x 2-3 days. She denies cough, sob, chest pain, dysuria, or flank pain. She has epig / LUQ pain with nausea, vomiting x 1, no diarrhea. She has no other pmh. Her meds include pred, metformin, lantus, metoprolol, and simvastatin. She has no psh. On exam, she has HR 80, RR 14, BP 130 / 74, T 103, RA sat is 100. Her exam is normal with minimal LUQ tenderness, if any. She is obese.
What work-up do we do?
What is her treatment and dispo?