Hi and welcome to HCM,thank you for your query.
The risk of breast cancer
and thrombotic incidents is still debatable. I think that there is some minor risk for both medicines,but it is not reason to switch it or stop it if there is no some side noticeable effects or other risk factor ssuch as smoking
and cancer in familly. So you should see another doctor if you dont want to switch this medicine but also consider other methods of contraception
Wish you good health. Regards.