Diaper rash

Hello mommies, my lo has bad diaper rash and after consulting dr, applied cream provided by dr. Now lo skin is turning to white at the diaper rash area. Is this sign of healing or its becoming worse? Im planning to bring him to dr again but clinic is not opened till next morning and i cant rest looking at lo skin. Thats why need to know from other mommies if you have experienced this. #diaperrash #1stimemom #firstbaby #mommybuntu #advicepls