Constipation during third-trimester pregnancy

Pregnancy hormones can reduce bowel activity. As the uterus grows, pressure in the abdomen may alter how stool moves. Iron in prenatal supplements, less walking because of fatigue or discomfort, and not replacing fluids can make stool firmer. Avoiding the toilet because of pelvic pressure or haemorrhoids can reinforce the cycle.

Constipation can include hard stool, straining, bloating, or a feeling of incomplete emptying. It does not by itself show that a pregnancy is unsafe. Ongoing symptoms may need a medicine review and assessment for contributors such as dehydration, hypothyroidism, or irritable bowel syndrome.

Drink regularly when allowed by your maternity team, and add fibre gradually from produce, whole grains, pulses, and nuts. Gentle movement within your pregnancy advice can help. Go when the urge appears; relax your abdomen, avoid prolonged straining, and use a small footrest for a more natural position.

If self-care is insufficient, ask your obstetric clinician or pharmacist about a suitable stool softener or laxative. Mention all supplements and medicines. Do not discontinue iron, use castor oil, or take a borrowed treatment without professional guidance.

Seek advice if constipation lasts, returns often, or causes significant pain. Get urgent medical assessment for severe abdominal pain, persistent vomiting, marked swelling, inability to pass gas, blood in the stool, fever, faintness, or dehydration symptoms. Maternity services should also assess vaginal bleeding, fluid loss, regular painful contractions, or reduced fetal movement.

Ask which treatment is suitable at your stage, whether iron can be adjusted safely, and what improvement to expect. Share your bowel pattern, pain level, vomiting, bleeding, and any pregnancy warning signs.