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Does Implanon mean I can't do a urine pregnancy test? #1014/9

I had Implanon inserted early July this year.  I have had irregular bleeding since. I have just had a bleed of 9 days, and prior to this it was about 3 weeks before that I had a bleed. The bleeding tends to be quite light, as my real periods were too! 

However, I have been pregnant before (my son is now 2 and a half), and I am feeling incredibly worried that I may be again. I have been experiencing fluttering and gentle movement in my abdomen for the last week or so, and experiencing mood swings. I am petrified, as I had an abortion in April of this year. My husband and I were nowhere near ready for another baby.

This is why I chose to get Implanon inserted! Is it possible to be pregnant while having Implanon, and also experience bleeds? I was told that a pregnancy test would show a negative, as the Implanon hormone is stronger than the pregnancy one.  But if I am pregnant and feeling movements (I would assume I am more than 16 weeks),would the pregnancy hormone be strong enough now to overtake the Implanon hormone?

Please help, I am beside myself with worry!

Implanon studies found no pregnancies (nada…zero) in the first 2 years.

Implanon has no effect at all on the accuracy of pregnancy tests.

So go ahead and do a sensitive urine pregnancy test if it would reassure you.


Good luck!

How are you today (November 6th)?  Are you now convinced that you are not pregnant? 


Key Words:  Implanon, bleeding, periods, pregnant, fluttering, movement, abdomen, mood swings, hormones, accuracy, sensitive urine pregnancy test

Posted 10-22-2009, Updated 11-6-2009 

Robert A. Hatcher MD, MPH
Emeritus Professor of Gynecology and Obstetrics
Emory University School of Medicine
Atlanta, GA

The directors and owners of this website and any publications and information concerning health matters offered here advise a person with a particular problem to consult a primary-care clinician or a specialist in obstetrics, gynecology, or urology (depending on the problem or the contraceptive) as well as the product package insert and other references before diagnosing, managing, or treating the problem.
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