I have swelling in one leg, and my urine is foamy. Please help.

Hi doctor,

I had some pain in my flank for the past four months and so I consulted the doctor. I have taken some scans of my liver and kidney. But nothing was determined and so I was asked to do a kidney function test. I got a creatinine level of 4.2 mg/dL and urea of 60 mg/dl. Both of the values were high. I have been prescribed Clopidogrel and I also started taking STC30 super life supplement. But my creatinine level came down to 1.3 mg/dL, and my urea level came down to 30 mg/dl after two months.

But now I have swelling in my right leg with some pain for the past one week. But I do not have pain in my flank and back pain which I was having for three months. I am nondiabtic and non-hypertensive. But at times, I have frequent urination. Now I have swelling in one leg. I had a potassium level of 4.5 mmol/L, sodium level of 135 mEq/L, chlorine level of 103 mEq/L, urea level of 30 mg/dl, creatinine level of 1.3 mg/dL, total cholesterol level of 125 mg/dL, HDL of 47.8 mg/dL, LDL of 75 mg/dL, VLDL of 13 mg/dL, triglyceride of 65 mg/dL, and fasting blood sugar of 88.9 mg/dL. I am not taking any medication for the past three months and my urine seems to be foamy