Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 3 months ago

Fast is immediately invalid as soon as the menstrual cycle starts even if one minute before Maghrib. You will get the reward of what you did, but you must keep that day later on as Qadha fast.

'Wassalam.