When I was first diagnosed in 2008 with stage 2 chronic kidney disease -- IgAN (glomerulonephritis), high protein in my urine (proteinuria), decreased kidney function, nephrotic syndrome, etc. -- one of my symptoms was "foamy" urine. My nephrologist told me if you see bubbles after you pee and they pop, that's normal, but urine that looks like thick foam, does not pop/dissolve, and just stays there, that could indicate kidney issue(s).

My kidney issues resolved after a long treatment then went into remission. It's good you saw a doctor. If you experience kidney-related symptoms, I recommend seeing a nephrologist asap, if you have not done so already.

Best wishes!