How are the days of the waiting period (iddah) calculated if the miscarriage occurred at five weeks and two days, and the divorce took place three days after the miscarriage while the bleeding from the miscarriage was still ongoing?

The waiting period (iddah) for a menstruating woman in divorce is three menstrual cycles. For a pregnant woman, it is until she gives birth. For a woman who has despaired of menstruation, it is three months. The preponderant opinion is that blood discharged after a miscarriage of a fetus that has not completed eighty-one days is not postpartum bleeding (nifas), but rather irregular bleeding (istihadah). This blood (whether nifas, menses, or istihadah) is not included in the calculation of the iddah, as the remainder of menses and nifas are not counted towards the iddah by scholarly consensus. Therefore, the iddah is calculated by awaiting three menstrual cycles and purity from the third.