eGFR at 89 (down 10 from last bloodwork check) Creatinine rising but still within range. Pursue or monitor?

24F, I was diagnosed have been on HCL for a year. My latest bloodwork shows a pretty rapid drop of my GFR that is now at 89. My creatinine also jumped from 0.85 to 0.92. My urinalysis came back cloudy with wbc esterase, trace protein and bacteria.

My rheum doesn't seemed concerned but he also didn't read my full bloodwork or notice there was trace protein until I pointed it out. Is this a sign of progression I should be worried about? Or is this something I can just monitor?