Answer
There is no Iddat (waiting period) after birth like in divorce and death.
However, the maximum period of Nifaas (bleeding after birth) is 40 days. It
is not necessary for a woman after birth to sit for 40 days in the confines
of her home. However, she should take care of her health after birth.
and Allah Ta’ala Knows Best
Mufti Ebrahim Desai