How long do you have to be on birth control for it to be effective?

Dr Rosemary Leonard Contraception is the process of taking steps to ensure you do not become pregnant when you have sex. There are many options for doing this. They all have pros and cons. Different methods will be right for different couples, or right for you at different times in your life. For more information on birth control, go to https://patient.info/health/contraception-methods