skip to main content

Emergency contraception 4 days after intercourse — USMLE Step 3 MCQ

Instant feedback + full explanation. One question, done properly.

HardOB/GYNEmergency contraception 4 days after intercourseUSMLE Step 3

A woman takes ulipristal acetate 30 mg for emergency contraception 72 hours after unprotected intercourse. She wants to restart combined oral contraception. What should she be told?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: E — Delay hormonal contraception 5 days, then use condoms for 7 days

The best answer is “Delay hormonal contraception 5 days, then use condoms for 7 days”. Starting progestin-containing contraception too soon can reduce ulipristal efficacy. She waits at least 5 days, then uses barrier protection for 7 days after restarting. After ulipristal, hormonal contraception starts no sooner than 5 days later.

Reference: CDC Selected Practice Recommendations: Emergency Contraception: https://www.cdc.gov/contraception/hcp/usspr/emergency-contraception.html