Urine Foam. Is a problem with my kidney?

I have been facing foam in urine for the last 5 years. All spot UACR reports are normal. Urine routine no protein found... But whenever I apply momentasone furomate cream on penis head and under the skin of penis...foam disappears and  as soon as I wash cream on penis head foaming again started... My physician is saying it's normal.. But foaming is making me nervous everyday... Creatinine is also normal every time...but only Urea and BUN always slightly on lower side.. Please see the attached reports...CRP is slightly high 5.76 mg/L, HBA1C is 5.4; BP is normal; 4.73 kUA/L phaditop allergy test and normal range is <0.35; prostate specific antigen 0.750 ng/ml normal range <4.0; eosinophil 10% slightly increased and LDL 117 mg/dl and non LDL cholesterol 137 both slightly increased from normal range. Rest the lipid panel is within normal range.. Please help me and suggest what I need to do and if there is a problem with my kidney