Thanks for your query.Based on the facts that you have posted it appears that you have macroscopic hematuria
( Blood in urine).
Though you have normal kidneys as reported on ultrasound
scanning and CT scan and no pathological lesion in bladder suggesting absence of urological cause of hematuria.The cause of hematuria has be traced out .
Please consult qualified Nephrologist
to rule out any Glomerular disease (Glomerular Nephropathy).He/She will advise you to get few more lab tests done to find out the cause of hematuria.He or she may advise you for renal biopsy
.Thanks and Regards.