the red bumps are nothing but a fungal infection
which most of the babies have. and you can use antifungal creams like candid gel or candid powder. If you want a mild cream homeopathy
suggests the use of calendula
to prevent this diaper rash
you have to soak your baby's bottom in warm water in between diaper changes. and allow to dry completely. and dont wipe the bottom but pat it dry before putting another diaper.