Don't worry, you have safe and effective options. The most common emergency contraceptive pill contains levonorgestrel, which is most effective when taken within 72 hours (3 days) of unprotected sex and is widely available over the counter. Another highly effective pill is ulipristal acetate, which can be taken up to 120 hours (5 days) after intercourse and typically requires a prescription. Both pills work primarily by delaying ovulation to prevent fertilisation. For the highest effectiveness, it is best to take the pill as soon as possible. Please consult a local pharmacist or healthcare provider to help choose the best option for you.