What Happens If You Take Birth Control While Pregnant: A Comprehensive Guide

Alan Lucks | MD

Medically reviewed by Alan Lucks | MD, Alan Lucks MDPC Private Practice - New York on January 23rd, 2026.

Key Takeaways

  • Taking birth control pills when you find out you are pregnant is generally considered safe

  • Most birth control pills do not cause significant harm to early pregnancy

  • Stop taking birth control pills immediately upon confirming pregnancy

  • Consult your healthcare provider for personalized medical advice

Birth control is a critical aspect of family planning and reproductive health. However, sometimes unexpected situations arise where a woman might continue taking birth control pills without knowing she is pregnant. Understanding the potential implications is essential for maternal and fetal well-being.

Discovering you've been taking birth control during pregnancy can be a source of significant anxiety. Fortunately, medical research suggests that most women need not panic about potential complications.

Understanding Hormonal Exposure

When a woman unknowingly continues taking birth control pills during early pregnancy, the primary concern is hormonal exposure. Modern scientific research indicates that the risk of birth defects is minimal.

Most birth control pills contain synthetic versions of estrogen and progesterone. These hormones are similar to natural pregnancy hormones, which means accidental exposure typically does not cause significant developmental issues for the embryo.

Potential Risks and Considerations

While the overall risk is low, some potential considerations exist. Some studies suggest a slight increase in the risk of specific complications, such as:

  • Slightly higher chances of low birth weight

  • Potential minor alterations in placental development

  • Marginal increases in specific congenital anomalies

However, these risks are statistically small and should not cause undue stress. The key is to stop taking birth control pills as soon as pregnancy is confirmed.

When and How to Stop Birth Control

Once you discover you are pregnant, discontinue birth control immediately. Your body will naturally adjust hormone levels to support pregnancy. Consulting your doctor from home can provide personalized guidance during this transition.

Medical Monitoring and Follow-up

Scenario

Recommended Action

Importance

Confirmed Pregnancy

Stop Birth Control

High

Unusual Symptoms

Contact Healthcare Provider

Critical

Early Pregnancy Screening

Schedule Ultrasound

Recommended

Importance of Professional Guidance

Every pregnancy is unique. While general medical knowledge suggests minimal risks, individual factors can vary. Always discuss your specific situation with a healthcare professional who can provide personalized medical advice.

Frequently Asked Questions

There's no strong evidence suggesting birth control pills directly cause miscarriage when taken unknowingly during early pregnancy.

Stop immediately upon confirming pregnancy and consult your healthcare provider.

Current medical research indicates minimal risks to fetal development.

Your healthcare provider might recommend additional monitoring, but routine prenatal care is typically sufficient.

Yes, prenatal vitamins are important and can be continued with your doctor's guidance.

The Bottom Line

Understanding what happens if you take birth control while pregnant can help alleviate unnecessary anxiety. Most women who accidentally continue birth control during early pregnancy need not worry excessively.

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