Plan B is a way to prevent pregnancy AFTER unprotected sex. You should not take Plan B if you are already pregnant since it will not work; however, taking Plan B if you are pregnant will not cause birth defects. Both Plan B pills can be taken at the same time with no decrease in effectiveness or increase in side
Accordingly, is Plan B more effective than birth control?
In general, progestin-only emergency contraceptive pills, like Plan B One-Step, Next Choice One Dose, Take Action and Levonorgestrel Tablets, are more effective than combined emergency contraceptive pills. And pills containing an antiprogestin, like ella, are more effective than progestin-only pills.