The short explanation
Burning urine with fever after delivery can be a urine infection, and having a catheter in hospital makes this more likely. It should be checked the same day, because fever means the infection may have spread beyond the bladder, and other infections after delivery need to be ruled out. A urine test can confirm infection, and a clinician may suggest treatment that is suitable while breastfeeding.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- Back or side pain, vomiting, or shivering suggest a kidney infection, which is more serious.
- Fever after delivery can also come from the womb, breasts, wound or chest, so the doctor may examine you fully.
- Drinking enough fluids and not holding urine can help.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This answer cannot tell where the infection is or how serious it is. Tests and examination are needed.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- Is this a urine infection, and has it reached the kidneys?
- Do I need urine or blood tests?
- Is the treatment safe while breastfeeding?
- What signs mean I should come back immediately?
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 have a high fever with shivering, feel confused, very drowsy or breathless, or feel extremely unwell.
Get help the same day
- Get seen today because you have fever with urine symptoms after delivery.
Book an appointment soon
- Return within a few days if symptoms are not improving after treatment.
Raise it at a routine appointment
- Mention the infection at your postnatal follow-up.
Sources
The evidence this explanation is built on.
- Postpartum care MedlinePlus (NIH)
- Urinary incontinence 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.
Did this answer your question?
Whatever you choose is filed against this version of the answer, never against you, and it is never shown as a count.
“Explain more simply” asks you which part was hard to follow, so the author knows what to rewrite. “My question is different” opens a private follow-up with this answer attached.
Saving, following up and reporting are all private. Nothing you do on this page is visible to other readers or to the doctor who wrote it, unless you ask a question.