What is the ruling on missed prayers (Asr, Maghrib, Isha, and Fajr) due to the assumption that menstruation had begun, and must they be made up consecutively?

If it becomes clear to you that you are not menstruating, then you must make up all the prayers you missed, having thought you were menstruating. Making them up immediately is obligatory according to the majority of scholars, and they should be made up in their proper order to avoid the disagreement of those who deem order obligatory in making up missed prayers.