The use of birth control will not affect the anesthesia. There is however, some evidence and literature that states birth control pills may cause some blood clots or blood clotting issues. If this has been your experience in the past with any other types of surgery, then there are certainly precautions that we can take. We will always use a compression stockings to prevent any blood clots in your calves, and we encourage you get up and slowly start walking once you are able.