you no longer have a period on birth control as you don’t ovulate, what you experience on your break week is a withdrawal bleed that may or may not occur. it’s completely normal for it to not happen and it’s not a cause for concern as long as you’ve taken your pill correctly. bleeding can occur at at any point during the 7 days, it can even start on the 7th day. you shouldn’t extend your break past 7 days. you’re protected as long as you take your new pack on time. it is recommended to shorten / skip breaks as they are not medically necessary and it will help avoid error.