Take a breath, there's a clear plan. Two things are time-sensitive: HIV PEP (within 72 hours) and emergency contraception (up to 5 days). Answer three quick questions below and we'll sort your next steps by urgency. Everything stays in your browser.
Your action plan
Do these, in order
This is general information based on CDC and ACOG guidance, not a prescription or medical advice. If a time window is still open, don't wait on this tool, contact a provider or pharmacist now.
What's time-sensitive, and for how long
Before anything else, there are two clocks that may still be running. Both close fast, so it's worth knowing where you stand on each:
- HIV PEP, 72 hours. If HIV exposure is possible, PEP medicine can prevent it, but only if started within 72 hours, and sooner is much better. An ER, urgent care, or clinic can start it. Check the PEP window.
- Emergency contraception, 5 days. If pregnancy is possible, EC works up to 5 days after, but the sooner the better. Plan B is on the pharmacy shelf; ella and the copper IUD are more effective and need a provider.
Your EC options, compared
| Option | Works within | Notes |
|---|---|---|
| Plan B / levonorgestrel | 3 days (best early) | Over the counter, no age limit; less effective at higher body weight |
| ella / ulipristal | 5 days | More effective than Plan B and steady across all 5 days; prescription |
| Copper IUD | 5 days | Most effective (>99%); works regardless of weight; provider-placed; can stay as birth control |
Emergency contraception prevents pregnancy, it is not the abortion pill and does nothing if you're already pregnant. Source: ACOG / CDC.
Keep exploring on EasySTD: whether you need PEP after exposure, when to test after exposure and HIV/AIDS testing.