Are intermittent bloody discharges during the menstrual cycle (light brown spotting, then a little red blood, then brown spotting) considered menstruation that prohibits fasting and prayer?

Brown spots are considered menstruation because they appeared during its time. The blood that reappears after two days and the subsequent brown spots are also considered menstruation if their return is before fifteen days from the onset of menstruation. One must refrain from prayer, fasting, and other things forbidden to a menstruating woman until fifteen days have passed from the onset of menstruation. Then, the woman should perform ghusl (ritual purification bath) and will be considered pure.