Thanks for your question. Whenever you have unprotected sex there is a chance that the pregnancy or a sexually transmitted infection (STI) could happen. In your situation, you and your partner made a smart decision to use emergency contraception which reduced the risk of pregnancy by 89%. Here are more important facts to be aware of.

•  Any time you have sex without using a condom, you run the risk of getting (or giving) a STI unless you and your partner have been tested and you know for sure that you are both STI free.
• Even if ejaculation doesn’t happen, “precum or pre-ejaculate” can leak out of the penis. Pre-ejaculate fluid often contains sperm. It only takes one sperm to reach a woman’s egg to cause pregnancy.
• It’s important to remember that emergency contraception (EC) doesn’t always work. It can be used within 5 days (120 hours) of unprotected intercourse but it is more effective the sooner it is taken. EC is not meant to be a regular form of birth control.
• The best way to prevent pregnancy is to use a regular birth control method. While condoms lower your risk of getting or spreading most STIs and reducing the chance of pregnancy, with typical use they are only 82% effective. Talk to your partner about the benefit of having her take an effective birth control such as: an implant, an IUD or birth control pills.
• The only way to be 100% sure that you won’t get an STI or get your partner pregnant is to not have sex.