Cerezette POP since January and a period every other week?

Ive been on the Cerezette POP since January and on POP due to being prone to get thrombisis. I know the doctor said that my periods may be a bit all over the place for a while but it's getting to the point where i'm getting frustated with the whole situation.

Still today i'm having a period every other week, or having a period 3 weeks straight or blotting. I've also had really sore breasts for about 2 months now which is more than likely related to the pill i'm taking. I've been looking up for people who have had similar problems but I can't find anything, sombody help please? Is there another POP Pill that I can take that won't give me all these problems!?

Also i'm not keen on the implant or coil idea where things are implanted into my body.