It's important to disclose all medications to your surgeon. However, birth control pills are generally not an issue. In my practice I don't ask patients to stop.
We allow our patients to stay on their OCPs. It is important to tell your surgeon about everything you are taking, even non-prescription medications like fish oil, and herbal medications like ginko biloba, which your surgeon may want you to stop since they can be associated with increased bleeding.So, tell your surgeon everything! And good luck!