What should you know about premenstrual bloating?

Hormonal changes before a period can alter fluid handling and bowel movement, leading to a tight or full abdomen, increased gas or changes in stool pattern. Some people also notice appetite changes or constipation at the same time. The timing matters: symptoms that begin before bleeding and settle afterward may fit a menstrual pattern, but timing alone does not establish the cause.

Bloating can also accompany irritable bowel syndrome, food intolerance, lactose intolerance or coeliac disease. Persistent symptoms may need a different assessment, particularly when they occur throughout the cycle or come with weight loss, vomiting, blood in the stool or a marked change in bowel habits.

Keep a simple diary of cycle dates, meals, bowel movements, pain and abdominal swelling. Eat slowly, drink fluids regularly, stay gently active and consider smaller meals if large portions worsen fullness. Notice whether fizzy drinks or particular foods trigger symptoms, but avoid restrictive diets without professional guidance. A clinician or nutrition counsellor can help test a suspected intolerance safely and protect nutritional balance.

Book an assessment if bloating is new, persistent, progressively worse, unrelated to your cycle or interfering with daily life. Seek urgent care for severe or rapidly worsening abdominal pain, repeated vomiting, a rigid or very swollen abdomen, inability to pass stool or gas, fainting, fever or blood in the stool. These signs can indicate a problem needing prompt examination.

Ask whether your symptom timing fits a menstrual pattern, whether medicines or constipation could contribute and which tests are appropriate. Mention pregnancy possibility, bowel changes, food triggers, family history and any symptoms that continue after your period.