For the past few days I have been experiencing foamy urine and back pain but when my blood test has been done of urea and creatinine and my ultrasonography has also been normal the only two problem I am experiencing is foamy urine and back pain so please suggest the next steps and how to treat foamy urine and actually I drink very Less water from few months what could be the reason I am attaching my ultrasonography and urea and creatinine report. My age is 22 and male. And few days ago I had urinary tract infection.