When someone starts a new hormonal birth control method for the first time, they need to use a back-up method (like condoms) or abstain for the first week. After that first week, the hormones are integrated into the body and will start to protect against pregnancy.
Remember that even though Nexplanon is 99% effective in preventing pregnancy for up to three years, it does not protect against any STIs!
It’s always a good idea to use some type of barrier method (like condoms) in addition to a hormonal method of birth control to help reduce the risk of STI transmission.
If you have more questions, give us a call at 303-442-5160!