What is the ruling on the brown discharge that occurred while taking menstrual delay pills during Ramadan, and what is the validity of the fasting, and is making up for it obligatory?

These discharges are from the kudrah (brownish or yellowish discharge), and are considered menses if they occur during the period of one's customary cycle, or if they are continuous with menstrual blood. If a woman sees them during her customary period and they persist for a day and a night, then this is menses, and she must make up the fast of those two days. However, if she sees them outside her customary period, then her fast is valid and she is not required to make it up.