Are these light bloody discharges that appeared 15 days after the menstrual period considered menstruation that prohibits prayer and fasting?

Scholars differ concerning the minimum period of purity between two menstrual cycles. The majority opinion states it is 15 days, while the Hanbalis hold it to be 13 days. If a woman sees blood after 15 days from the cessation of her previous menstruation, it is considered menses, and she should refrain from fasting and praying because the relied-upon opinion is that any blood a woman sees during the possible time of menstruation is considered menses.