Just started cerazette, worried about length of bleeding

Hey, so I have recently switched from femodine  to cerazette to stop periods all together. I've been on it for 9 days now and am still bleedinginf. The first 5-6 days was a Pugh to allow me to wear a tampon however now it's not enough and only really when I wipe (sorry for TMI) has anyone else experienced this and how long am I expecting it to last for me?? My usual bleed only last 5-6 days but I'm getting a little concerned as I'm still bleeding very lightly and not sure did this is normal?