Does bleeding resulting from the insertion of an IUD prevent prayer, fasting, recitation of the Quran, and marital intimacy?

The blood discharged by a woman is considered menstrual blood unless it exceeds 15 days, or, according to some jurists, if it persists throughout the entire month. If it persists, it is then considered irregular bleeding (istihadha). Any natural blood that does not have an external cause, such as a wound, is menstruation, unless it is continuous for the woman, only stopping for a short period, in which case it is istihadha. Sheikh Ibn 'Uthaymeen holds the view that the default for anything discharged from the womb is that it is menstruation, unless there is evidence to prove it is istihadha, and this is the most preponderant view.

Regarding changes in the menstrual cycle, the menstrual period may increase or decrease, or come early or late. The blood discharged in these cases is considered menstrual blood.

As for bleeding after inserting an IUD, it often causes disturbances in the cycle. The blood discharged due to it is considered menstrual blood, and with it, prayer and fasting are not permissible, even if it exceeds the usual menstrual period, unless it exceeds 15 days or persists throughout the entire month. The claim that this blood is not menstrual blood at all has no basis.