Ruling on a woman’s purity from menstruation if her custom is fragmented

Question:
A woman asks and says: My period comes to me every month for five days, then I become pure, and then after three days it comes to me again for two days. So, should I leave off the prayer, or should I consider it irregular non-menstrual bleeding?

Answer:
If this is the custom that is established, yes, it becomes a fragmented custom: three days and two days with purity in between. So, consider all the days as menstruation, the first and the last, and the purity in between, if this is your prevailing custom.