signs nexplanon is wearing off

ELiv 2025

3 min read 06-03-2025

Nexplanon, a small, flexible birth control implant, offers discreet and effective contraception for up to three years. However, like all hormonal contraceptives, its effectiveness can wane over time. Recognizing the signs that your Nexplanon is wearing off is crucial for maintaining reliable birth control. This article explores the potential indicators that your implant might be nearing the end of its lifespan, emphasizing the importance of consulting your healthcare provider for confirmation and guidance.

Understanding Nexplanon's Effectiveness

Nexplanon prevents pregnancy primarily by releasing the hormone etonogestrel, which thickens cervical mucus, inhibiting sperm from reaching the egg and potentially preventing ovulation. While highly effective, the hormone level gradually decreases over time. This decrease can lead to changes in your body and reproductive cycle, signaling a potential loss of contraceptive efficacy.

Common Signs Your Nexplanon Might Be Wearing Off

Several symptoms could indicate that your Nexplanon's effectiveness is diminishing. It's vital to remember that these symptoms are not definitive proof; only your doctor can confirm whether your implant is still functioning properly. It is crucial to get confirmation from your healthcare provider before making any changes to your birth control.

Irregular Bleeding or Spotting

One of the most common signs is a change in your menstrual bleeding pattern. Many women experience irregular bleeding or spotting, even while the implant is working effectively. However, a significant shift in bleeding patterns, such as a return to regular periods, heavier bleeding, or prolonged bleeding, might suggest the implant's effectiveness is decreasing.

Changes in Your Cycle

Experiencing unexpected changes in your menstrual cycle, such as a return to regular cycles after experiencing irregular cycles while using Nexplanon, can indicate that the implant’s hormone levels are declining. A return to predictable ovulation patterns might also signify reduced effectiveness.

Increased Cramps or PMS Symptoms

Some women report worsening premenstrual syndrome (PMS) symptoms or increased menstrual cramps as their Nexplanon approaches the end of its lifespan. This could be due to fluctuating hormone levels. However, PMS symptoms can vary greatly between individuals and aren't always a reliable indicator.

Breakthrough Ovulation

The most concerning sign is the possibility of breakthrough ovulation. This means your ovaries are releasing eggs despite the implant's presence, increasing the risk of pregnancy. This is not always accompanied by obvious symptoms and often requires testing to confirm.

Missed Periods (Amenorrhea)

While irregular bleeding or spotting is common, a complete absence of periods (amenorrhea) for an extended period could signal that the implant is failing. This is also not a reliable indicator, but a symptom that should be reported to your doctor.

Pregnancy

Obviously, the most serious sign that your Nexplanon is no longer working effectively is becoming pregnant. If you experience symptoms of pregnancy—such as missed periods, morning sickness, or breast tenderness—seek medical attention immediately. A pregnancy test should be taken to verify.

What to Do If You Suspect Your Nexplanon is Wearing Off

If you're experiencing any of these symptoms, it's crucial to contact your healthcare provider. They can perform a physical exam and potentially an ultrasound to confirm whether your implant is still in place and releasing sufficient hormones. Your doctor may also conduct blood tests to measure hormone levels.

Don't attempt to self-diagnose. The symptoms listed above can be caused by a variety of factors. Your doctor will be able to help you determine the cause of your symptoms and guide you on the best course of action.

Important Note: While these signs might suggest that Nexplanon is less effective, they aren't definitive proof. Only a healthcare professional can confirm whether your implant is still providing adequate protection against pregnancy. Always use backup contraception if you suspect its effectiveness is decreasing.

When to Get Your Nexplanon Replaced

The standard lifespan of a Nexplanon implant is three years. It's generally recommended to have it removed and replaced after this period to ensure continued effective contraception. If your doctor determines that your implant isn't functioning correctly before the three-year mark, they will advise you on the appropriate course of action, potentially involving early removal and replacement.

This article is intended for informational purposes only and does not provide medical advice. Consult with a healthcare professional for any health concerns or before making any decisions related to your health or treatment.