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 1 year ago

If you doubt whether your previous prayers and fasting were performed with or with out Ghusl of Janabah, then you do not need to re do it, but if you are sure that you did not perform Ghusl of Janabah, then you need to re do it as Qadha.

Wassalam.