Do USG abdomen pelvis once

Reasons can be multiple, most common being ill hygienic practises, prolonged diaper use

Urinary tract anomalies can be there. Blood stream infection also common at this age

There are 2 reasons 1) hygiene- change of diapers , cleaning after passing stools are important and should be done maintaining sterility. 2) whenever a baby less than 1 year gets UTI we always do a USG abdomen, followed by a DMSA scan 3 months later to rule out common structural abnormalities of the urinary tract mostly PU (perurethral) valve which is seen in this age group.