A woman who experiences bleeding during Ramadan, sometimes of a foul, dark red color, and sometimes in drops: what is the ruling?

Question:
Honorable Shaykh, may Allah grant you success, this woman says that she was using birth control injections, and in the month of Sha'ban she used an IUD instead of the injections. The doctor told her that her menstruation would be prolonged. She says, Shaykh, that she fasted the entire month of Ramadan, but on some days drops of blood come out of her, and on other days blood comes out with her urine. This blood has a foul smell and a dark red color. Is her fast valid, given that this condition continued with her throughout the days of the month?

Answer:
If blood comes out of her every day, then this is blood, meaning menstrual blood, and her fast is not valid. She must make up the day on which blood comes out, as you described, with its foul smell and the color of menstrual blood. She must make up that day. As for what comes out as only brownish or yellowish discharge, her fast is valid, if Allah wills. Yes.