What should a woman do who has PCOS and is able to distinguish b/w menses and istihaza but has irregular periods so her cycle is not set sometimes it comes earlier than 15 days or takes upto 2 months however she is able to distinguish if it is menses. Can she follow her instincts?
If it doesn’t exceed 15 days per month, this is her period and she must not pray when the blood is there until she sees her purity.
If it exceeds that, if her period was regular every month, she must consider the timing and stop praying when the time of her menses is due.
If she didn’t have a fixed time every month, then she may act upon recognition of the characteristics of menses.