An ectopic pregnancy can cause pain at the tip of either shoulder, and some people feel it in both. The pain is usually felt where the shoulder ends and the arm begins. The side of the shoulder pain does not reliably show which fallopian tube is affected.
Shoulder-tip pain during a possible pregnancy needs prompt medical attention. It can occur when internal bleeding irritates the diaphragm, which sends a pain signal that is felt in the shoulder.
What ectopic pregnancy shoulder pain can feel like
The Royal College of Obstetricians and Gynaecologists describes ectopic pregnancy pain as pain at the tip of the shoulder. It may remain present for a while. It can feel worse when you lie down and may stay the same when you move your shoulder.
This pattern is called referred pain. The source is inside the abdomen, while the sensation is felt at the shoulder. Blood leaking into the abdomen can irritate the diaphragm and produce this referred pain.
The affected shoulder may be the left, the right, or both shoulders. Shoulder side cannot confirm where an ectopic pregnancy is located. Clinicians use an examination, blood testing, and ultrasound to determine whether a pregnancy is developing inside or outside the uterus.
Other symptoms that can occur
Ectopic pregnancy symptoms often develop during early pregnancy, commonly between weeks 4 and 12. Some people have few or no symptoms at first. When symptoms appear, they can include abdominal or pelvic pain, unusual vaginal bleeding, and signs of internal bleeding.
Symptoms that deserve urgent attention include:
- Pain at the tip of one or both shoulders
- Sudden or severe abdominal or pelvic pain
- Lower abdominal pain that is stronger on one side
- Vaginal bleeding or a brown, watery discharge
- Weakness, dizziness, or fainting
- Pain or pressure when having a bowel movement
A person can have an ectopic pregnancy without every symptom on this list. The amount of vaginal bleeding also does not show how much bleeding may be occurring inside the abdomen.
When shoulder pain is an emergency
The American College of Obstetricians and Gynecologists advises emergency care for shoulder pain accompanied by sudden severe abdominal or pelvic pain, weakness, dizziness, or fainting. These symptoms can occur when an ectopic pregnancy ruptures a fallopian tube and causes life-threatening internal bleeding.
Call emergency services or go to an emergency department if you may be pregnant and feel faint, collapse, develop intense abdominal pain, or experience shoulder pain with weakness or dizziness. Tell the medical team that pregnancy is possible, even if you have not yet taken a pregnancy test or had an ultrasound.
If the pain is less severe, contact an obstetric clinician, early-pregnancy service, or other qualified healthcare professional promptly. The NHS recommends getting medical advice right away for shoulder-tip pain when ectopic pregnancy is possible.
How an ectopic pregnancy is checked
Symptoms alone cannot diagnose an ectopic pregnancy. A clinician may perform an examination, measure the pregnancy hormone human chorionic gonadotropin, commonly called hCG, and use an ultrasound to locate the pregnancy.
Follow-up matters when the pregnancy location is still unknown. According to ACOG, the risk of rupture also continues during medical treatment until treatment and follow-up are complete. New shoulder pain, severe abdominal pain, weakness, or faintness during that period requires immediate care.
Shoulder location is one part of the picture
Aching caused by the shoulder joint often changes with movement, lifting, reaching, or pressure on the sore area. Ectopic pregnancy shoulder-tip pain is referred from the abdomen and may stay present regardless of shoulder movement. That pattern can help describe the symptom to a clinician, while medical testing provides the diagnosis.
For general information about movement-related shoulder symptoms, visit RangeMaster's guides to common causes of shoulder discomfort and common shoulder injuries. Those resources cover musculoskeletal shoulder problems and do not replace urgent pregnancy assessment.
This article provides general education and is not a diagnosis or a substitute for medical care. Read our medical disclaimer. Seek urgent medical help for possible pregnancy with shoulder-tip pain, severe abdominal or pelvic pain, weakness, dizziness, or fainting.
