This swelling is due to maternal hormones and will go down within a few days.
Gently clean your baby's genital area with warm water daily. If your baby has a penis, you may notice that their testicles appear large. This swelling is due to maternal hormones and will go down within a few days. If your baby is circumcised, the tip of their penis will be tender as it heals; use petroleum jelly to protect the site and prevent the penis from sticking to a diaper. If they are not circumcised, no additional care is needed. You should not attempt to retract the foreskin; this will occur naturally on its own—sometime between 5 years old and puberty.