Purity is recognized by seeing the white thread like discharge or by complete dryness! Once you see this, you are pure. However, waiting two days is too Much! If you usually get your monthly menses regularly and at the end, the blood stops for more than half a day, like 15 hours or so, you should take ghusul and pray.

I know you cannot fast until you are certain your period has finished. I wait 2 days after the last time I see blood to know it is completely over and not just a pause. But I feel bad because I feel like I am wasting 2 days of not fasting it feels wrong. But if I don’t wait, then I am in doubt and not 100% certain and then my fasts won’t count in doubt. Is it okay so I am certain? —