Links:
What is an Iddah?
Iddah of a woman who has irregular period / menses
Iddah of a widow
What can a Widow in her Iddah (waiting period) do and can't do?
Iddah after divorce of a Normal Woman, A Woman without menses or & A Pregnant Woman
Iddah for a divorced woman
The idha period for a divorced woman
If wife leaves her husband's house intending to divorce Where does she stay in iddah