Blocked Fallopian Tubes and Fertility: Causes, Tests and Treatment

Fallopian tubes play an important role in natural conception. They help transport an egg from the ovary, and fertilisation commonly takes place inside a tube.

If one or both tubes are blocked or damaged, becoming pregnant may be more difficult. However, a blocked tube does not always mean pregnancy is impossible. The effect depends on whether one or both tubes are affected, the location and severity of the blockage, and other fertility factors.

1. What Do the Fallopian Tubes Do?

The fallopian tubes connect the area around the ovaries with the uterus. After ovulation, an egg is released from an ovary and may be picked up by a fallopian tube.

If sperm fertilises the egg, the early embryo travels through the tube towards the uterus.

A blockage or significant damage may interfere with this process. If both tubes are completely blocked, natural conception is generally not possible without the blockage being addressed, although treatment suitability varies.

2. What Causes Blocked Fallopian Tubes?

Possible causes include:

Previous pelvic infection: Certain infections can cause inflammation and scarring.
Pelvic inflammatory disease (PID): This can damage the fallopian tubes.
Endometriosis: Inflammation and adhesions may affect the tubes or surrounding tissues.
Previous abdominal or pelvic surgery: Scar tissue may develop after surgery.
Previous ectopic pregnancy: Treatment or damage associated with an ectopic pregnancy can affect a tube.
Other pelvic conditions: Some conditions can alter the structure or function of the tubes.

Some people have no obvious symptoms and discover a tubal problem only during a fertility evaluation.

3. What Are the Symptoms?

Blocked fallopian tubes often cause no specific symptoms. You may have regular periods and no pain.

If the underlying cause is a pelvic infection or endometriosis, you might experience pelvic pain, painful periods or unusual discharge. These symptoms are not specific to a tubal blockage and need medical assessment.

Seek urgent medical care if you may be pregnant and experience severe one-sided abdominal pain, shoulder-tip pain, dizziness or fainting. These can be warning signs of an ectopic pregnancy or another emergency.

4. How Are Blocked Fallopian Tubes Diagnosed?

A commonly used test is hysterosalpingography (HSG). During this procedure, contrast material is introduced through the cervix into the uterus while X-ray images are taken to see whether the tubes appear open.

Other tests may be appropriate in selected situations.

HSG results require careful interpretation. Sometimes a tube may appear blocked because it temporarily contracts or because of technical factors during the test. Your clinician will decide whether further assessment is necessary.

An HSG can help assess whether the tubes are open, but it does not measure every aspect of their function.

5. Can You Get Pregnant With One Blocked Fallopian Tube?

Yes, natural pregnancy may be possible if one tube is healthy and functioning, the remaining reproductive factors are favourable, and ovulation occurs.

However, the likelihood depends on the type and location of the blockage, the condition of the other tube and additional fertility factors.

If one tube is blocked, ask your fertility specialist whether further testing or treatment is necessary before deciding how long to continue trying naturally.

6. What If Both Fallopian Tubes Are Blocked?

If both tubes are completely blocked, natural conception is generally prevented because the egg and sperm cannot meet through the usual route.

Treatment depends on the cause and type of blockage. In some selected cases, a procedure may be considered to address the blockage. In other cases, IVF may be recommended because it allows fertilisation to occur outside the body and does not rely on the fallopian tubes in the same way as natural conception.

If a fluid-filled damaged tube, known as a hydrosalpinx, is present, your specialist may discuss treatment before IVF because it can affect treatment outcomes.

The most appropriate plan depends on your individual test results and medical history.

7. Can Blocked Fallopian Tubes Be Treated?

Sometimes. Treatment may involve managing an underlying condition, selected tubal procedures or IVF.

Not every blockage can be repaired, and surgery may not restore normal tubal function. Your doctor will weigh the potential benefits and risks, including the risk of ectopic pregnancy after some tubal treatments.

Do not take medicines or herbal products claiming to “clear” blocked tubes without medical evidence. A confirmed structural blockage generally requires appropriate clinical assessment.

Frequently Asked Questions

Can an ultrasound detect blocked fallopian tubes?

A routine ultrasound does not reliably show whether every tube is open. A clinician may recommend HSG or another specialised test.

Can I have periods if my tubes are blocked?

Yes. Menstruation is mainly controlled by hormones and the uterus, so blocked tubes do not necessarily stop periods.

Does a blocked tube always require IVF?

No. Some people with one functioning tube may conceive naturally, and selected tubal problems may be treated. IVF may be considered depending on the blockage and other fertility factors.

Does HSG treatment itself open blocked tubes?

HSG is primarily a diagnostic test. In some circumstances, flushing may be associated with improved conception chances, but it should not be relied on to treat every type of blockage.

The Bottom Line

Fallopian tube health is an important part of fertility, but a diagnosis of tubal blockage does not lead to the same treatment for everyone.

If you suspect a tubal problem or have been told that an HSG showed a blockage, discuss the results with a qualified fertility specialist. They can explain what the findings mean and whether further tests, treatment or IVF should be considered.

Medical information disclaimer

This article is for general educational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. It has not been medically reviewed by a Dream Baby doctor. Please consult a qualified healthcare professional for advice about your circumstances.

References

1. American Society for Reproductive Medicine (ASRM). Fertility Evaluation of Infertile Women: A Committee Opinion. https://www.asrm.org/practice-guidance/practice-committee-documents/fertility-evaluation-of-infertile-women-a-committee-opinion-2021/

2. American College of Obstetricians and Gynecologists (ACOG). Evaluating Infertility. https://www.acog.org/womens-health/faqs/evaluating-infertility

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