Some yellow discharge came out of her whilst she was fasting, after her period had ended
Question

A woman’s period ended in Ramadaan before dawn came, so she fasted that day, then Zuhr came and she prayed, then she noticed a yellow discharge. Is her fast valid?.
Praise be to Allah.If her period ended before dawn and then she fasted, her fast is valid, and the yellow discharge that she noticed after her period ended does not have any effect on it, because Umm ‘Atiyyah (may Allaah be pleased with her) said: “We used not to regard the brownish and yellowish discharge that comes after the period ends as meaning anything.” Narrated by al-Bukhaari, 1/84; Abu Dawood, 307. 
And Allaah is the Source of strength. May Allaah send blessings and peace upon our Prophet Muhammad and his family and companions.