Is it necessary to stop fasting and praying upon the sighting of light bleeding after forgetting birth control pills, and is this blood considered menses?

The default is that blood discharged from a woman is menstrual blood, which prohibits her from doing what menstruation prohibits, and she is not allowed to wait to verify.

If it becomes clear that it is menses: she does not make up the prayers but makes up the fasts.

If it becomes clear that it is not menses (it did not continue for a day and a night): she makes up the prayers she missed.

If the bleeding stops completely (due to pills or spontaneously): she is considered pure.

If the blood comes and stops within 15 days: then all of it is menstruation, and the period between the cessation and return within the 15 days is also menstruation according to the preponderant opinion. She makes up the fasts for the days she fasted during it, but there is nothing upon her regarding prayers.

If the blood returns after 15 days of purity: then it is a new menstruation.