Changes in discharge

I started the pill a week ago and have noticed I've quite a big increase in discharge and it's kind of yellow. I've had to start wearing liners because its staining my underwear. I've read online about my specific pill (cerazette) and the leaflet it comes with but dont see anything to do with discharge. I was on this same pill years ago before I had my daughter and dont remember having this. I have no itching, bad smell, clumps etc just a big increase and yellow tinge.