Dr. Ghali

And as for those of your women who have despaired of menstruation, in case you have any suspicion, then their (fixed) spell shall be three months, (along) with those who have not menstruated (as yet). And (as for) those with burden, (i.e., those who are pregnant) their term is when they bring forth their burden; and whoever is pious to Allah, He will make for him, of His Command, easiness.