When can a menstruating woman fast?

She was forced to touch the Mus-haf when she was menstruating

Can Women Enter the Mosque During Menses?

She saw the tuhr then she had some discharge – what should she do?

She was not certain that her period had ended, and she prayed and fasted

If the bleeding lasts for more than 15 days is it still regarded as menstruation, and can she fast?

Her periods stopped but a little bit of blood that was pale in colour came out

She purified herself following her menses then she saw some drops of blood

Her period comes twice a month – should she stop praying and fasting each time?

40-Day Rule after Birth in Islam: When Can Women Pray and Fast?