When your baby is developing inside your body, he will be getting his nourishment through the placenta and is connected by the umbilical cord. At the time of birth the umbilical cord is cut and there is stump at the belly button.
This procedure is done painlessly and one must take care of the stump until the baby belly button fall off. One must makes sure to fasten the diaper bellow the navel until the baby belly button fall off.
It is important to keep the area dry and hygienic so that the baby belly button fall off easily without any infections. In case you notice blood oozing out of the belly button, you must make sure to clean the area regularly using a cotton swab and let it dry on its own.
It is better to dress the baby in only a top and diaper until the belly button fall off. It is advisable not to dress the baby in pants or an undershirt until the baby belly button fall off. It usually takes around 2 or 3 weeks until the belly button fall off. One must not try to pull at the belly button stump even if it seems to be hanging on thread.