A question, if I may. If a woman is begins spotting/bleeding outside of her normal menstrual cycle, it is not heavy and she has a history of getting stress period/bleeding, is she still obligated to pray salah or will this be considered a menstrual period?

1- If she knows the spotting will continue more than 3 days (continuously)

2- And it has been at least 10 days since her last period

Then she considers it haydh and does not pray. Otherwise, if it doesn’t continue for 3 days or it has been less then 10 days since her last period, this would be considered istehadha and she would need to pray.