Is one-sided abdominal pain during pregnancy dangerous?
Should you be concerned about light spotting after finding out you are pregnant?
Why is an “ectopic pregnancy” considered an emergency?

An ectopic pregnancy is a condition in which the embryo implants outside the uterine cavity, where it cannot develop normally. If it is not diagnosed early, it can cause internal bleeding and become life-threatening.

Although it is less common than a normal pregnancy, it is a condition that requires close attention, especially in early pregnancy.

What is an ectopic pregnancy?

Normally, the embryo implants in the uterine cavity
But in an ectopic pregnancy, the embryo implants in another location, such as

• The fallopian tube (most common)

• The ovary

• The cervix

• The abdomen

These locations cannot expand to support a pregnancy, so there is a risk of rupture and bleeding.

According to guidelines from the American College of Obstetricians and Gynecologists, early diagnosis can significantly reduce severe complications.

6 warning signs of ectopic pregnancy

1️⃣ One-sided abdominal pain

A key symptom is pain in one side of the lower abdomen
It may feel dull or suddenly sharp.

2️⃣ Abnormal vaginal bleeding

The bleeding is often light spotting and may be dark or brown in color
Many people mistake it for a normal period.

3️⃣ Dizziness or lightheadedness

If there is significant bleeding in the abdomen, blood pressure may drop
This can cause lightheadedness, palpitations, or fainting.

4️⃣ Pain radiating to the shoulder

In some cases, blood in the abdomen can irritate the diaphragm and cause pain that radiates to the shoulder.

5️⃣ A positive pregnancy test, but no gestational sac visible in the uterus

If ultrasound does not show a gestational sac in the uterine cavity, this condition should be suspected.

6️⃣ hCG levels do not rise appropriately

A doctor may monitor hCG levels. If they rise more slowly than expected, it may indicate an ectopic pregnancy.

Why is an ectopic pregnancy dangerous?

If the fallopian tube ruptures, rapid internal abdominal bleeding can occur, which is an emergency requiring immediate surgery.

In the past, ectopic pregnancy was a major cause of death in the first trimester
Although diagnosis is much better today, the risk still exists.

The World Health Organization reports that access to early diagnosis and treatment plays an important role in reducing maternal mortality.

Who is at higher risk?

• Have had an ectopic pregnancy before

• Have had fallopian tube surgery

• Have a history of pelvic infection

• Use certain assisted reproductive technologies

However, some cases occur even without any clear risk factors.

How is it diagnosed?

Evaluation may include:

• Transvaginal ultrasound

• hCG hormone level testing

• Clinical symptom assessment

How is it treated?

Treatment depends on the stage and severity.

• In early cases, methotrexate may be used to dissolve the pregnancy tissue

• If there is rupture or heavy bleeding, emergency surgery is necessary

Early treatment helps reduce the chance of losing the fallopian tube and lowers the risk of complications.

When should you go to the hospital immediately?

• Sudden, severe abdominal pain

• Lightheadedness or fainting

• Shoulder pain with bleeding

• Palpitations and sweating

Do not wait and monitor symptoms on your own.

Quick summary

An ectopic pregnancy is a pregnancy in which the embryo implants outside the uterine cavity
It may start with mild symptoms, but it can become severe very quickly.

If your pregnancy test is positive, you should undergo an ultrasound to confirm that the pregnancy is located correctly in the uterine cavity 

Early diagnosis not only confirms the location of the pregnancy, but also helps doctors assess risk, plan prenatal care, and prevent potentially dangerous complications.

Early testing is the key to preventing serious dangers and keeping mothers as safe as possible.

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Care provided by obstetricians and gynecologists, with ultrasound equipment that provides clear images and detailed pregnancy assessment
The clinic atmosphere is warm, private, and unhurried
The clinic is located in Ari Soi 2, conveniently close to Ari BTS, just 200 meters away, and parking is available.

Author

Dr. Vichadet Vichchulda
Specialist in Obstetrics and Gynecology
Currently pursuing a subspecialty in Maternal-Fetal Medicine
King Chulalongkorn Memorial Hospital

Research published in the International Journal of Transgender Health

References

1. American College of Obstetricians and Gynecologists. Ectopic Pregnancy Guidelines.

2. World Health Organization. Maternal health recommendations.

3. Williams Obstetrics, 26th Edition.