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Loestrin and Pregnancy

Since Loestrin is a birth control pill, it should not be used during pregnancy. The FDA classifies Loestrin as a pregnancy Category X drug, meaning that it could lead to serious problems when taken during pregnancy. However, large studies on birth control pills (such as Loestrin) and pregnancy have shown that accidentally taking the pills during early pregnancy didn't increase the risk of problems.

Loestrin and Pregnancy: An Overview

Loestrin® (norethindrone/ethinyl estradiol) is a birth control pill, known medically as an oral contraceptive. If you are pregnant, you should not intentionally take Loestrin or any other birth control pills. While it is probably not dangerous to do so, there is no good reason to take Loestrin during pregnancy.
(Loestrin is equivalent to Gildess®, Larin™, Junel™, and Microgestin® birth control pills. The information in this article also applies to each of these medications.)

Loestrin and Pregnancy Category X

The U.S. Food and Drug Administration (FDA) uses a category system to classify the possible risks to a fetus when a specific medicine is taken during pregnancy. Pregnancy Category X is given to medications that should not be used during pregnancy, usually due serious problems, such as birth defects or miscarriages.
Although it is "common knowledge" that taking birth control pills during early pregnancy is dangerous, in reality, doing so is not likely to cause any serious problems, even though Loestrin is a pregnancy Category X medication. Large studies have shown no increased risk of birth defects when birth control pills were accidentally taken in early pregnancy.

Loestrin and Pregnancy: Final Thoughts

If you accidentally used Loestrin for a while before you realized you were pregnant, this probably will not cause any problems, although you should discuss this with your healthcare provider. If you are pregnant, you should stop using Loestrin right away. If you think you may be pregnant, you should contact your healthcare provider for further instructions.
Keep in mind that if you take the drug correctly (without missing any pills), the risk of pregnancy while taking Loestrin is quite low. If you miss your period while taking it, you may want to consider making sure you are not pregnant (an over-the-counter pregnancy test should be sufficient), especially if you have missed any of the pills. If you miss two periods in a row, you should definitely make sure you are not pregnant.
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