Ask the Health Educator: Implant Effectiveness

Question from June 19, 2015

My boyfriend and I had unprotected sex exactly one week after I got the nexplanon implant. How effective is it at that point at preventing pregnancy?


The implant is more than 99% effective at preventing pregnancy 7 days after insertion. But remember that anytime a person has sex, especially unprotected sex, there is a chance pregnancy could happen. Since you have the implant the chances of you becoming pregnant are extremely small. If you are worried, take a pregnancy 2 weeks after this particular incident.

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