A 35-year-old woman was admitted with fever, chills, and low back pain for 5 days. Right renal area showed percussion tenderness. Urinalysis (UA): red blood cells (RBC) 5-6/HPF, white blood cell (WBC) count 20-30/HPF. Midstream urine culture revealed Escherichia coli >10⁵/ml. After 3 days of antibiotic therapy, her temperature normalized. At discharge after 2 weeks, UA was normal, urine culture was negative, no fever persisted, but she still had abdominal pain without renal percussion tenderness. What should be emphasized post-discharge?