Is the brownish and yellowish discharge that follows the brief white discharge at the end of menstruation considered menstruation, necessitating waiting for its cessation for purification, or is it not to be taken into account after seeing the white discharge?

If a woman sees purity by one of its two signs, then any yellow or brownish discharge she sees after that is not considered menstruation unless it occurs during her usual period. However, yellow or brownish discharge before seeing purity is considered menstruation. So, if a woman sees the white discharge and does not concern herself with any yellow or brownish discharge that appears afterward, then what she is doing is correct.