For many women, the first sign that something is wrong is a change in their period — heavier bleeding, longer cycles, more pain. Fibroids are one of the most common causes, and understanding the mechanism helps you act on it.
Why Fibroids Change Your Period
Fibroids — particularly submucosal and intramural types — increase the surface area of the uterine lining, disrupt normal uterine contractions, and create a hormonal environment that thickens the endometrium. The result is more tissue to shed, slower expulsion, and heavier, longer, more painful bleeding.
Heavy Periods and Anaemia
Soaking through a pad or tampon every hour for several consecutive hours, passing large clots, or bleeding beyond 7 days are all signs of fibroid-related menorrhagia. Over time this causes iron deficiency anaemia — fatigue, shortness of breath, poor concentration. A full blood count to check haemoglobin is a sensible early step alongside gynaecological assessment.
Pain and Spotting
The uterus contracts harder around fibroids, and elevated prostaglandins worsen cramping. Submucosal fibroids can also cause spotting between periods — always worth investigating to rule out other causes. For a full picture of symptoms, see our fibroid symptoms checklist.
What Helps
An anti-inflammatory diet, regular exercise, and adequate iron intake (lentils, spinach, pumpkin seeds with Vitamin C) are practical daily steps. Medical options depend on fibroid type, size, and your priorities — see our guide on natural fibroid management approaches for a broader overview.
