The short explanation
Please do not wait until tomorrow. A red, hot, painful breast with fever and chills a few weeks after delivery is often mastitis, an inflammation of the breast that can become infected. It needs to be seen by a doctor today, because infection can worsen quickly and some women need treatment such as antibiotics, which only a clinician can decide. In most cases you can continue breastfeeding from the affected side, and keeping milk flowing usually helps. The milk is not harmful to your baby.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- Feeding often from both breasts, starting on the sore side if you can bear it, checking the baby's latch, rest and fluids are commonly advised. Gently expressing if the baby does not empty the breast can help.
- A lump that stays tender and swollen even with treatment may be an abscess, a collection of pus, which may need draining.
- Government hospitals and the hospital where you delivered can see you urgently. Tell them you are breastfeeding so any treatment suits that.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This cannot tell whether you have mastitis, an abscess or another cause. An examination today is needed to decide.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- Is this mastitis or could it be an abscess?
- Do I need treatment, and is it suitable while breastfeeding?
- How can I improve the baby's latch?
- What signs mean I should come back quickly?
When to seek help
Clinician-approved guidance for this topic. When in doubt, being seen is never the wrong choice.
Emergency — call 112 now
- Call 112 or go to the nearest emergency department if you feel faint, confused, very drowsy, breathless, or have a very high fever with a racing heart.
Get help the same day
- Get care today for a red, hot, painful breast with fever or chills.
Book an appointment soon
- See a clinician within a few days if a tender lump remains after the redness and fever settle.
Raise it at a routine appointment
- Ask a lactation counsellor or nurse to check feeding position at a follow-up visit.
Sources
The evidence this explanation is built on.
- Mastitis NHS
- Breastfeeding MedlinePlus (NIH)
- Breast diseases MedlinePlus (NIH)
Who wrote and reviewed this
Every AskHer answer names its author. A clinically reviewed answer also names the clinician who signed it off — if no clinician is named below, it has not been clinically reviewed.
- Author
- AskHer Editorial (AI-assisted draft) AskHer's editorial team — not an individual clinician Works in English, தமிழ், हिन्दी
- Clinical reviewer
- Nobody yet No clinician has signed this answer off, and no person on the editorial team has read it yet. That is what the “Written with AI assistance” label means. It is queued for an editor to read, and then for a clinician who works in this area. The sources it was drafted against are listed above.
- Review status
- Written with AI assistance — not yet reviewed by a person
- Last reviewed
- Not yet reviewed by a person
- Version
- 1
Correction history
Substantive changes are listed, not quietly edited away.
No corrections have been made since this answer was first published.
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