Low eGFR

Hello..... not quite sure if this is anything to be be concerned about, but back in October I had an eGFR of 57. I had it retested in early December and it was 53. I am a healthy, active 35 yr old Caucasian woman. I am 5'10, 150lbs, eat healthy and work out 4-5 days per week. I've read conflicting articles as to what is considered a normal GFR range. I usually have blood in my urine anytime I have a urinalysis done. I've had recurring UTIs. Other than that, nothing really out of the ordinary. No abnormal creatinine or protein findings in labwork. My primary care dr did not seem too concerned. But I've read online that any levels between 34-59 is considered CKD Stage 3. Should I get a second opinion?

What is your creatinine level?

On 12/4 it was 1.170, which I believe is within normal limits