Been diagnosed with ckd 3a since last year with gfr 59 with creatinine level at 132. Quite recently i noticed when i stand idle for long, my feet swells mildly. But now the sole of my right feet hurts badly mostly in the mornings when i wake up. It normally gets better when i walk on it for a while. I am due to retest my gfr in December. Is anyone here having similar foot hurting conditions or this has nothing to do with ckd 3a. I'm 38, male and African. How often should i check my gfr level? I'm worried.