Hello, Welcome to Healthcare Magic. Permarin .625 contains estrogen, will not work as an emergency contraceptive. Please take I-pill or unwanted 72 within 72 hours of unprotected sex, will work. Other method is use of contraceptive pills which contains levonorgestrel .15 mg. 10 tablets taken instant and 10 after 12 hours, means 1.5 mg once and then 1.5 mg 12 hour back. You can take nordette 28 as it contains 0.15 mg levonorgestrel, but take as i explained above. If you are in fertile period and miss these drugs then wait for next periods. If period missed, do an early morning urine pregnancy test. Still doubt, consult your gynecologist. Thanks for contacting us. Take care...