Pregnancy constipation: when to worry

Hormonal changes, reduced movement, iron supplements, and pressure from the growing uterus can slow the bowel during pregnancy. Hard stools, straining, or a sense that the bowel has not emptied may be uncomfortable without being dangerous. The pattern matters: a sudden change, symptoms that keep worsening, or constipation that does not respond to basic measures deserves review.

Pain that is intense or localised, a swollen abdomen, repeated vomiting, or inability to pass stool and gas can signal a bowel problem requiring urgent assessment. Constipation with poor fluid intake can lead to dehydration. Hypothyroidism and irritable bowel syndrome may also contribute to persistent bowel changes, while diverticular disease is another condition your clinician may consider when pain or bleeding is present.

Drink fluids regularly if you have not been told to restrict them, increase fibre slowly, and take pregnancy-safe gentle movement. Respond to the urge to use the toilet, allow time, and avoid forceful straining. Review iron, antacid, and other medicines with your maternity clinician rather than stopping them yourself. Nutrition counselling can help you choose tolerable fibre sources when nausea or food restrictions make eating difficult. Keep a short record of stool changes, pain, fluids, and remedies tried.

Seek urgent care for severe or persistent abdominal pain, repeated vomiting, a hard or markedly swollen abdomen, blood in the stool, fainting, fever, or inability to pass stool and gas. Contact your maternity team promptly if constipation continues despite self-care, interferes with drinking, or comes with dizziness, very dark urine, reduced urination, vaginal bleeding, or concerning pregnancy symptoms. Do not wait for constipation to settle when you feel acutely unwell.

Ask what symptoms change the urgency, whether your medicines or supplements may be contributing, and which bowel treatment is suitable in pregnancy. Mention any thyroid history, recurrent abdominal pain, bleeding, vomiting, and changes from your normal bowel pattern.