Is the sticky, pale yellow fluid after menstruation considered the white discharge (al-Qassah al-Bayda') or normal discharge?

A woman knows she is pure by one of two signs: the complete dryness of the spot, such that the cotton swab comes out clean with no trace of blood, yellowness, or turbidity (normal secretions do not harm); or the white discharge (a white fluid by which women recognize the cessation of menstruation). If purity has been achieved by dryness, then transparent secretions afterwards do not affect the validity of the purity, and the ghusl (ritual bath) is valid. As for yellowness on the following day, if it occurs during the customary period, it is menstruation; otherwise, it is not considered menstruation.