Risk of Miscarriage if You Become Pregnant With IUD

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For women who are avoiding pregnancy, an IUD is extremely effective. They are placed in the body and typically prevent pregnancy for between three and five years. Women who are using an IUD, have less than 1% chance of becoming pregnant while they are using one. However, pregnancy with an IUD does occur on occasion and there are serious risks involved if pregnancy does occur.

Both the mother and the baby could be at risk of developing complications due to the IUD, so it is important that you talk to your doctor if you do find out that you are pregnant. There are some steps that need be taken in order to protect you and your baby from complications.

1. Risks

If a woman learns that she is pregnant and she has been using an IUD, there is a greater chance of miscarriage, bleeding, and premature delivery. There is also a greater risk that the pregnant woman will develop a uterine infection.

Fetal Chorioamnionitis, Sepsis and Fetal Distress

Ectopic and tubal pregnancies also occur more frequently in women who have an IUD. Studies have shown that women with an IUD who become pregnant have a greater risk for the pregnancy to end adversely.

2. Statistics

One study that looked at nearly 200 pregnant women with IUDs determined that over half of these women gave birth to a premature baby, whereas only 21% had a premature baby when they did not have an IUD.

This study showed that the average birth of a pregnant woman with an IUD was at 28 1/2 weeks. Also, nearly 16% of women who were pregnant with an IUD had a miscarriage after the first 12 weeks of pregnancy when only one percent of the women without an IUD have the same outcome.


Instances of ectopic and tubal pregnancies also rose 3% in women with an IUD versus those who did not have one. This study looked at women who kept their IUD throughout their pregnancy. Other studies have shown that if the IUD is removed, the miscarriage rate drops from about half to about 25%.

3. Warning

It is important to remember that if an IUD is left in place during the pregnancy the fetus will be exposed to the drugs that are administered through the IUD. These are the same drugs that are found in many other birth control products, but it is unknown what side effects the baby will experience from being exposed to them.


If you find that you are pregnant and you have an IUD in place, you should have your healthcare provider remove it as soon as possible. The removal process is fairly simple and can be done in the doctor’s office.

4. Things to think about

IUDs are mostly used for women who have already had a child. Women who have never been pregnant before tend to have side effects that a woman who has been pregnant will not have, such as pain and cramping. Women who have not been pregnant are also more likely to have the IUD expelled as well, but they are still able to use one if they choose.


There have been some concerns regarding pelvic inflammatory disease and studies have shown that there is a link between this disease and IUD usage. However, it is still not certain as to whether the IUD itself causes this disease or if it is caused by something else.

It is possible that if you have an infection when the IUD is put in place that the infection may be transferred to the uterus and fallopian tubes. When you are considering using an IUD it is important that your doctor test you for sexually transmitted infections before it is put into place.

5. Conclusion

An IUD is an extremely popular device for women who are looking to protect from pregnancy for several years. Although chances of becoming pregnant while using one are extremely slim, it is still possible for it to happen.

While-there-are-risks-if-you-leave-IUD- while-pregnant-these-risks-are-eliminated-when-IUD-is-removed

While there are risks involved if you leave the IUD in place while you are pregnant, many of these risks are eliminated when the IUD is removed. If you are considering using one, you should talk to your doctor about the risks that are involved if you were to become pregnant as well as any side effects that you can expect from the device.

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Dr. Lynette Weiss, MD

Dr. Lynette Weiss is ConceiveEasy's Senior Physician and Scientific Director. She is certified in Obstetrics and Gynecology by the American Board of Obstetrics and Gynecology and is a fellow of the American College of Obstetrics and Gynecology.