The short explanation
No, this should not wait. Being unable to keep any fluids down for a day or more in pregnancy can lead to dehydration quickly, and she needs to be seen today. Severe pregnancy sickness, called hyperemesis gravidarum, is a recognised condition that is treated in hospital with fluids through a drip and medicines that are used in pregnancy. Weakness and sleeping all day can be signs that she is already dehydrated. Take her to a hospital casualty or labour ward today; government hospitals see pregnant women at any hour without an appointment.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- Other signs of dehydration include very little or dark urine, dry mouth, dizziness when standing and a fast heartbeat.
- Severe vomiting is more common with twins and in women who had it in a previous pregnancy.
- Once rehydrated, many women feel much better, and the doctors can plan how to manage the sickness at home.
- Severe vomiting can also be very hard emotionally. Family support with meals, rest and household work makes a real difference.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This cannot assess how dehydrated she is or rule out other causes of vomiting. Only an examination and simple tests at the hospital can do that.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- Is she dehydrated, and does she need fluids through a drip?
- What treatment is used for severe sickness in pregnancy?
- What should she eat and drink once she goes home?
- When should we bring her back if it starts again?
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 now if she is confused, very drowsy and hard to wake, vomits blood, has severe belly pain, or faints.
Get help the same day
- Get care the same day, today, because she cannot keep fluids down.
Book an appointment soon
- Arrange a follow-up with her doctor within a few days after she is treated.
Sources
The evidence this explanation is built on.
- Pregnancy MedlinePlus (NIH)
- Prenatal care 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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