No, Emergency Contraception is NOT Needed
Your patient does NOT need emergency contraception because she was fully protected by the Nexplanon implant at the time of unprotected intercourse two days ago. The Nexplanon provides continuous, highly effective contraceptive protection until the moment of removal 1.
Key Clinical Reasoning
Why Emergency Contraception is Unnecessary
Nexplanon was in place during intercourse: The etonogestrel implant maintains contraceptive efficacy through continuous ovulation suppression and cervical mucus thickening. Since the unprotected intercourse occurred while the implant was still in situ, she was protected at that time 1, 2.
The implant's contraceptive effect persists until removal: There is no "gap" in protection simply because you plan to remove it today. The device works until the moment it's physically removed from the arm 1.
Transitioning to Oral Contraceptive Pills
When starting combined oral contraceptive pills after Nexplanon removal today:
Start the pills immediately (same day as implant removal) if it is reasonably certain she is not pregnant 3
She needs backup contraception for 7 consecutive days after starting the pills 4
This means: Use condoms or abstain from intercourse for the next 7 days while the pills establish contraceptive protection
Timing consideration: If she starts pills within the first 5 days of her menstrual cycle (since her period started), no backup is needed. If >5 days since menstrual bleeding started, she needs 7 days of backup 3
Important Clinical Pitfalls to Avoid
Common misconception: Providers sometimes mistakenly believe that planning to remove a contraceptive method retroactively eliminates its prior protection. This is incorrect. The Nexplanon protected her during the intercourse that occurred while it was in place.
Return to fertility is rapid: After Nexplanon removal, etonogestrel levels drop below detectable within one week, and pregnancies can occur as early as 7-14 days post-removal 1. This is why immediate initiation of the new contraceptive method with appropriate backup is critical.
If she cannot start pills today: If for any reason she delays starting the pills after implant removal, she should use barrier methods or abstain until pills are started, then use backup for 7 days 4.
Summary Algorithm
- Remove Nexplanon today as planned
- Start combined oral contraceptive pills today (same day)
- Use backup contraception (condoms) for 7 days after starting pills
- No emergency contraception needed - she was protected during the intercourse 2 days ago