What is the duration of Iddah for a divorced woman and a widow?

1. For a divorced woman who menstruates, the Iddah is three complete menstrual cycles. 2. For a divorced woman who does not menstruate (due to old age or young age), the Iddah is three months. 3. If a divorced woman is pregnant, her Iddah ends immediately upon the birth of the child, regardless of the time passed. 4. For a widow (a woman whose husband has died), the Iddah is four months and ten days. 5. If a widow is pregnant, her Iddah is also until the delivery of the child. During the Iddah, it is obligatory for the woman to remain within the house where she was living at the time of divorce or the husband's death, and she must observe 'Sog' (mourning) by avoiding beautification, jewelry, and perfume.