Implantable contraceptive devices like Nexplanon are among the most effective forms of contraception
available. They typically have failure rates (pregnancy) of less than 1%, therefore it is quite unlikely that you have become pregnant with the device in place. However, it is technically possible, and you should consult with your primary care or OB GYN doctor
, who may decide that a pregnancy test is worthwhile to rule out that possibility.
A much more likely cause of your bleeding
is simply that many women who use Nexplanon do experience unpredictable and unscheduled bleeding with the device in place. This is a well know side effect of the medication, which may affect up to 15% of all women who use the device. Sometimes this bleeding tends to go away over time the longer the device is in place, but this is not always the case, and some women continue to have irregular bleeding for as long as they have the device in place. Your doctor will be able to advise you on this and determine if this is what is causing your bleeding. If so, and if the amount and frequency of bleeding is intolerable to you, you may need to have the device removed and substituted for a different form of contraception. In any case, please speak with your doctor.