Why it happens
Sore, tender or heavy breasts in the days before your period are a normal part of the menstrual cycle for many women. They're caused by the natural rise and fall of the hormones oestrogen and progesterone in the second half of your cycle, which makes breast tissue swell and retain fluid. It's known as cyclical breast pain.
Because it's hormonal, it usually affects both breasts and often eases once your period starts.
How long it lasts
Cyclical breast tenderness typically starts in the week or so before your period (the luteal phase) and settles within a day or two of your period beginning. The timing and intensity vary from person to person and can change with age, especially in perimenopause when hormones fluctuate more.
If your breast soreness follows this predictable, cycle-linked pattern, it's very likely just cyclical — and reassuringly normal.
What can help
A well-fitting, supportive bra makes a real difference. Simple pain relief like paracetamol or anti-inflammatories can help, as can reducing caffeine for some women. If the pain is severe, persistent or not clearly linked to your cycle, or if you notice a lump or other breast changes, see a GP to check it out.
If cyclical breast pain is really bothering you, a GP can discuss options — a telehealth consult is a convenient way to talk it through.
References & sources
- 1.Breast health — Jean Hailes for Women's Health
- 2.Breast checks to detect breast cancer — healthdirect
- 3.Breast cancer — healthdirect
This content is general information and not a substitute for individual medical advice. Please consult a GP for your personal situation.
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