Depending on how bad the side effects are, your doctor might tell you to stick with it. It can take months for your body to get used to it and for the side effects to go away. I would make an appointment with your doctor to discuss the side effects your feeling and other options besides this specific pill you're on. Every birth control pill is a little different and you'll react differently to them. Not to mention, there's a slew of other options beyond the pill.