What is the time for ghusl after menstruation if the signs of purity, such as dryness or the white discharge, do not appear, and the yellowish discharge continues after the bleeding stops?

If the yellowish and brownish discharge, connected to blood, continues beyond fifteen days with the blood, and you do not see either of the two signs of purity (dryness or white discharge), then you are considered a woman with Istihada (non-menstrual vaginal bleeding). You must then do what a woman with Istihada does. If you have a previous habit (a regular period), observe it, and whatever exceeds it is Istihada. If you do not have a habit, then whatever you distinguish as menstrual blood by its color, smell, or thickness is menstruation, and whatever is less than that is Istihada. If you cannot distinguish and do not have a previous habit, then observe the predominant habit of the women in your family (six or seven days), then perform Ghusl (ritual bath) and Wudu (ablution) for every prayer.