In June 2016 I was treated for a Uti. Symptoms were blood in urine (trace) and swelling of feet but the main symptom was flank pain. A course of antibiotics did nothing. My blood work was normal and the pain continues (and have been to the dr a couple times since). Since then I have lost so much weight and recently started having heart palpitations and memory fog. I'm having a CT scan tomorrow with contrast. Blood work last week came up showing an anion gap of 20 (previously it was 15) MCV 79, RDW 15.6, Hemoglobin 11.2, and MCHC 30.7. My doctor has said nothing is clinically significant. All other blood work was normal. I'm 35 and otherwise healthy. Any thoughts?