When to worry about heavy periods with iron deficiency anaemia

Iron deficiency anaemia develops when the body cannot make enough haemoglobin because iron stores are low. Heavy menstrual bleeding can remove iron faster than it is replaced, causing tiredness, headaches, dizziness, reduced concentration, paleness, or breathlessness with activity. Treating low iron without checking why bleeding continues may leave the underlying problem unresolved.

Book a medical appointment if heavy periods continue, return after treatment, or affect your ability to work, exercise, or care for yourself. A clinician can review blood tests, medicines, diet, and possible causes of bleeding. Take iron only as advised, because the dose and duration should match your results and health needs. Keep a record of flow and energy levels.

Seek urgent care if heavy bleeding comes with fainting, chest discomfort, breathlessness at rest, confusion, or a racing heartbeat that does not settle. Get prompt help when you cannot keep fluids down, feel too weak to stand safely, or the bleeding is rapidly worsening. Ask someone to accompany you if you feel unsteady.

Ask what your blood results show, whether ongoing bleeding is lowering your iron again, and when testing should be repeated. Discuss options to reduce menstrual blood loss, side effects of iron, and whether another cause needs investigation.