I got swelling on my foot. Shall i do?

I got swelling on my foot and met doctors, they advised me to check uric acid content. I checked, the uric acid was higher than the range. I took febustat -40 mg for three months. After that uric acid is checked and found normal. Meanwhile dring annual health check up is was found that Vitamin B12 is very less. Doctor advised me to take e must mc capsules and neurokind plus injections. i took them and checked the vitamin B12 is in normal range. During this period of 3 months, my foots having swelling, it might be reduced but, not came to normal state. I dont drink alcohal, i dont smoke also. Now i am getting the more swelling on the foots. What might be the reason? One of my friend suspected that, it might be related to kidney functioning. i have urine urgency problem also from the past one and half year. i consulted urologist also, they gave me small tablet. if it is taken there is no probelm for two days. My main concern is sweling on foots.Now what shall i do?