It is fine to be on most forms of birth control when applying to be a donor. Some forms will eventually need to be removed when you start the process, but you can apply any time.

Northeast Assisted Fertility Group Celebrates 20 Years of Surrogacy and Egg Donation Services
We created the Northeast Assisted Fertility Group (NAFG) in 2006 to fill a niche in the third-party reproduction services industry: surrogacy agencies and egg donor

