Why have i just started to bleed on the pill? ive been taking it for over a year and this has never happened before! (yasmin)

Breakthrough bleed: Breakthrough bleeding (bleeding at the wrong time) is very common on birth control. It happens in about 1/3 of users. Its no big deal and usually self corrects over time. It is a common side effect and does not mean something is wrong or that the pill is not working. Sometimes stopping for 5-7 days to trigger a real period corrects breakthrough bleeding