Good evening! Girls, the situation is such that there are small red pi…

Good evening! Girls, the situation is such that there are small red pimples on the genitals of the child. At first they were barely noticeable. They went to the doctor, she said it's a diaper rash, smear with petroleum jelly and keep without diapers. For a week he walked during the day without it, they smeared, but they appeared more. Tomorrow we have another appointment, but I'm still worried. The child doesn't seem to be bothered, at least he doesn't cry, doesn't touch his crotch, doesn't scratch. Who has this experience? Sorry for the photo in advance ??