The short explanation
Restless legs are common in pregnancy, especially in the later months, and many women describe exactly this: an uncomfortable, crawly feeling and a strong urge to move the legs, worse in the evening and at night. Low iron stores are one of the recognised contributors, and pregnancy uses up a lot of iron, which is why your gynaecologist wants to check. If your ferritin or haemoglobin turns out to be low, treating it may ease the symptoms for some women and also helps prepare your body for delivery. Restless legs in pregnancy often improve or disappear within weeks after the baby is born.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- Other things that may make symptoms worse include caffeine, tiredness, and some antihistamines or anti-nausea medicines; mention anything you are using.
- Gentle stretching, a warm bath or a leg massage before bed, and a regular sleep routine help some women.
- Severe calf pain or swelling in one leg is different from restless legs and needs to be checked promptly, because clots are more likely in pregnancy.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This cannot tell you whether low iron is behind your symptoms. A blood test and your doctor's assessment are needed.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- Can my ferritin be checked along with haemoglobin?
- Is anything I am currently using making this worse?
- What can I do at night to ease the symptoms?
- Will this settle after delivery?
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 labour ward if you have one swollen painful leg with breathlessness or chest pain, bleeding, or severe headache with blurred vision.
Get help the same day
- Get care the same day if one calf becomes painful, red or swollen.
Book an appointment soon
- Mention the symptoms to your doctor within a few days so iron can be checked.
Sources
The evidence this explanation is built on.
- Iron deficiency anaemia NHS
- Iron MedlinePlus (US National Library of Medicine)
- Anemia MedlinePlus (US National Library of Medicine)
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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