Did you know that for 120 hours after sex, you can take emergency contraceptive pills to avoid becoming pregnant? AND for 5 to 7 days after sex, you can have an IUD inserted to help prevent pregnancy? Emergency postcoital insertion of the Copper T 380 A IUD (ParaGard) is the most effective currently available postcoital contraceptive. For more information you can call the toll-free hotline (1-888) NOT-2-LATE.