General health query. Kidney disease?

So, In 2018 i had some issues with frequent urination. I showed it to various urologists, urine routine/culture were normal, ultrasound was also normal but showed ectopic left kidney which is functioning. But the frequent urination issue persists till date. Lately i have been having food pain, did b12, vit d, cbc, sugar and uric acid all are fine. And cbc has rdw 14.8..slight hight. Bt ortho doctor said uric acid is 6.8mg/dl, a little on higher side bec of which this is happening. Given my history of frequent urination, i am scared if it's any kidney disease. I have done all other tests bt m too afraid to do kft, since m scared if it will get some bad result and as m young I hv to get through something bad :(. Another usg was done recently due to other stomach issues, kidney was normal. No abnormalities.. Should I go for kft as a routine checkup?(not advised by anyone yet) Or usg rules out kidney disease? I have done urine tests few mnths back, it was normal only. Please advise..