A menstruating woman is not allowed to: 1. pray both obligatory and nawafil prayers; 2. fast whether it is an obligatory or a nafl fast; 3. circumambulate the Ka’bah. For more, please see the detailed answer.

Istihadah means abnormal vaginal bleeding outside the time of the monthly period. There are three cases for istihadah. See the detailed answer for these cases and when women should resume prayer after each case.