I am black male, 52 years old. Have had high blood pressure for 25 years, currently taking three medications to control. Also been diabetic for 4 years, taking glipizide to control. Recent GFR test in July 2015 was 63, October GFR came back at 55, creatinine at 1.7mg/dl, urea nitrogen at 21mg/dl.LYMPHOCYTES/100 LEUKOCYTES at 51.3. This indicates level III kidney disease. My doctor has not advised seeing a Nephrologist, should i be worried?