That is a great question! Lets talk a little bit about the Nexplanon.
The Nexplanon is a single matchstick-sized rod that is placed underneath the skin in your upper arm. A nurse or doctor inserts the rod. Once inserted, the rod releases hormones gradually for up to three years.
Nexplanon is 99% effective in preventing pregnancy for up to three years, but it does not protect against any STIs!
The reason your doctor told you to refrain from any sexual activity 7 days prior to your insertion is to ensure that there is no risk of pregnancy when you get the Nexplanon. It is also important to know that sperm can live in the body up to 5 days, and that hormonal forms of birth control ( including the Nexplanon) are not effective until 7 days after the person starts it. During those 7 days a person needs to use a back up method like a condom, or abstinence.
So your doctor is ensuring that there is no possibility of pregnancy before inserting the Nexplanon. If you have anymore questions you can give our Teen Clinic a call! 303-442-5160.