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Pregnancy Symptoms While On Nexplanon: Your All-In-One-Guide!

Indeed, the Nexplanon is among the most convenient and reliable birth control methods. Thousands of American women consider it as their contraception method. Still, some women may experience pregnancy symptoms while on Nexplanon.

Is it really possible to have pregnancy symptoms while on nexplanon?

As a matter of fact, nexplanon does not cause pregnancy. It is a relatively uncommon condition. Statistically, only one in 100 women with a nexplanon implanted incorrectly has the chance of becoming pregnant. With a birth control implant, you run the risk of being pregnant ectopically or cryptically.

Let’s look at all the facts in detail. 

Table of Content

Nexplanon: A Quick Overview

In medical terms, Nexplanon is a device that prevents pregnancy. It is a soft, flexible, and disposable device. This product is available as an off-white or white color and measures 4cm long by 2mm in diameter. It consists of ethylene-vinyl acetate (EVA) containing 68mg of synthetic progestin etonogestrel, barium sulfate, and magnesium stearate, enveloped by an EVA copolymer layer.

The Nexplanon implant is inserted deeply in the upper arm. This implant is best used for up to 3 years. It must be removed at the end of the 3rd year and replaced by a new one if continuous protection is required. 

Although it is an effective contraceptive method, still it can cause many adverse effects, such as the formation of blood clots, liver diseases, severe depression, breast tenderness, irregular menstrual periods, and many more. If someone feels one of these symptoms, she should consult the doctor. 

Nexplanon does not protect someone from sexually transmitted diseases. It starts working just after 1 week. It prevents pregnancy up to 3 years; that’s why it is called get-it and forget-it birth control.


How Effective Is The Implant?

Nexplanon is one of the most effective, safest, and most convenient methods for females to prevent pregnancy. It has a 95% success rate. Still, 1 out of 100 women will get pregnant each year that use nexplanon. 

The method is a great choice if you wish not to become pregnant while breastfeeding. A woman can still produce milk without being affected by the procedure. 

With a Nexplanon implanted into the body, you are no longer required to take pregnancy control drugs, nor do you need to precautions before sex. Nexplanon is also effective for lowering period cramps. 

However, if you decide to get pregnant, you can remove it at any time with the help of a doctor or a nurse. After the Nexplanon removal, you can get pregnant soon. It does not affect your fertility. To maintain effectiveness, Nexplanon should be replaced after every 3 years.

Can You Get Pregnant While on Nexplanon Birth Control?

Immediately after the implant is inserted, you would be protected from getting pregnant as we know there is only a 1% chance for females to get pregnant. It begs the question “can you get pregnant while on nexplanon?”

No, you cannot get pregnant while using nexplanon birth control. As nexplanon causes lighter periods, some women may think that they are pregnant, but there is no need to worry because it may be one of its side effects. 


Nexplanon contains progestin that makes the mucus in your cervix thick, which further stops sperms from reaching your egg. Obviously, when sperm cannot fuse with an egg, pregnancy cannot happen.

Progestin hormone cannot let the eggs leave your ovaries or prevent ovulation, so there will be no egg to fertilize. Therefore you cannot get pregnant if the eggs are not released.

Nexplanon, however, may be less effective when combined with certain medicines. Hence, anyone considering taking any medication should consult their doctor first.

Pregnancy Symptoms While on Nexplanon

Although nexplanon is the most effective method to prevent pregnancy, still there is a chance of conception, which is exceptional. For instance, assume a woman is pregnant while she is on nexplanon. In that situation, she should see a doctor right away because the risk of an ectopic pregnancy (when the baby develops outside the womb) is high. 

Females who get pregnant while on contraception can notice the following pregnancy symptoms while on Nexplanon:

  • Missed period
  • Backaches
  • Spotting or bleeding
  • Breast tenderness
  • Nausea
  • Fatigue
  • Headaches
  • Mood swings
  • Increased urination
  • Weight gain
  • Food poisoning
  • Stress
  • Sleep disturbances
  • Common cold

After noticing these symptoms, if you doubt that you are pregnant, you should take a pregnancy test at home. If the test is positive, you need to talk to your doctor as soon as possible.

Pregnancy Symptoms But Negative Test

If you feel the pregnancy symptoms while on Nexplanon, first take a pregnancy test to know whether you are actually pregnant or not. It might be a false positive or false-negative result. Generally, false positives are rare. False negatives are more prevalent. If you have pregnancy symptoms, but the test is negative, mostly there is no potentially serious reason behind it. Some of the reasons may be the following:

Testing Too Early

If you test a few days before your expected period, you will get the wrong results because you would not have enough hormones related to pregnancy in your urine that can trigger a positive result. Re-testing again in 72 hours can have different results. Therefore, you should wait a few days after the expected period date to test.

Hormone Levels Are Too Low

If you have waited until you actually missed the period and the results on the test are still negative, there is the possibility that your hormone level is too low that it cannot detect the pregnancy. For accurate results, you should test in the morning so that you would use the stiffest urine. It would be more effective.

Misused The Test

The pregnancy test should be used according to the given instructions. Although it is not hard to use it anymore, you must use it correctly. If you keep it in your bathroom for too long before checking, it will affect the results. Also, if you pee on the wrong part of the strip, you will not get accurate results.

Bought A Defective Test

Just like other products, pregnancy tests can also be damaged, expired, and exposed to extreme temperatures. If your test is negative, you should buy another fresh test from a different place and try again.

Special Cases

False-negative results are occasionally observed. Conditions like ectopic pregnancy, cryptic pregnancy, and later-state pregnancy can cause wrong results. In such cases, the best way to confirm pregnancy is a blood test or ultrasound by the doctor.

What Causes Nexplanon to Fail?

Nexplanon works when used correctly and according to the given instructions by the brand. Still, the Nexplanon implant is not 100% reliable. In fact, its failure rate is about 0.05%. Human behavior is one factor that plays a role in the failure of nexplanon implants. 


Even though it is the most effective way to control birth, it may fail if it is not used correctly. Moreover, some of the medicines can cause the nexplanon to fail. For instance, if a person is taking antiepileptic drugs, it may affect its effectiveness. 

Side Effects of Nexplanon

No doubt, nexplanon is beneficial, yet it has many side effects other than getting pregnant. It has the potential to induce major adverse effects, such as:

  • Depression
  • Blood clot formation
  • Diseases related to liver
  • Irregular menstrual cycle
  • Mood disturbances
  • Breast tenderness
  • Back pains
  • Disturbances in appetite
  • Acne
  • Pain in abdomen
  • Fatigue
  • Headaches
  • Flu or cold

If someone notices any of these side effects, they shouldn’t bother them and consult the doctor or the nurse.


1. Would a positive pregnancy test be possible tomorrow if the test was negative today?

Answer. Yes, a pregnancy test can be negative one day and positive the next. You can only take these tests within a certain amount of time because they have a time limit. It is possible to get negative results from pregnancy tests if you use them too early or at the wrong time of day. In addition, if you take the test shortly after waking up, you may see positive results since your urine is the strongest or most concentrated at that point in the day. The test will not detect the urine if it is diluted. That is why the results can vary from time to time.

2. Can you get pregnant on nexplanon after 2 years?

Answer. As a result of nexplanon’s high efficiency, it is not possible to become pregnant after 2 years since there is less than a 1% chance of becoming pregnant while using it. You can use it for up to 3 years, which means there is no chance of getting pregnant in between this period. Nexplanon contains progestin that delays ovulation and thickens the mucus in the cervix to prevent pregnancy, so there is a meager chance of being pregnant.

3. Is it possible to get pregnant with an implant in your arm?

Answer. You cannot get pregnant with the implant in your arm because it contains a birth control hormone that works efficiently—only a little chance for a woman to get pregnant while on an implant. Once you decide to get pregnant, you have to remove it from the doctor. As it does not affect fertility, you may get pregnant soon after the removal.


There is very little chance to experience pregnancy symptoms while on nexplanon. In short, nexplanon contains a hormone that helps to stop ovulation or thickens the mucus in the cervix to protect against pregnancy. If inserted correctly, it has very little chance of failing. Still, if you experience pregnancy symptoms while on nexplanon, you should consult a gynecologist.

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