Is blood discharged after a miscarriage at six weeks of gestation considered menstrual blood? Should one pray while it continues? If blood is discharged during prayer, should the prayer be repeated, or is the woman considered pure? Should missed prayers be made up if they were obligatory?

This blood that appears before the formation of the fetus is not considered nifas (definition) (postpartum bleeding). Nor is it considered menses unless it coincides with your habitual period. Therefore, it is considered istihadha (irregular vaginal bleeding), except for what coincides with your habit, which would then be menses.

You must perform ablution for every prayer and pray with your ablution as much as you wish until the prayer time expires. What issues from you does not harm you unless you find sufficient time to pray with a valid purification. If you omit prayer during the time of istihadha, it is safer to make it up to avoid disagreement among scholars. A woman experiencing istihadha has all the rulings of ritually pure women.