The short explanation
Not seeing a heartbeat on a very early scan is common and often means the pregnancy is simply too early for it to show. The heartbeat usually becomes visible around six to seven weeks, and if ovulation happened later than expected, the pregnancy may be younger than the dates suggest. That is why doctors repeat the scan after a week or so instead of deciding on one scan. Sometimes the repeat scan shows that the pregnancy has stopped developing, which is called a miscarriage. That is common in early pregnancy and is usually due to chance problems with development, not anything you did. The repeat scan is the step that gives a clear answer.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- The type of scan matters. An internal vaginal scan can see early pregnancies more clearly than a scan over the belly.
- Your doctor will look at the size of the pregnancy sac and whether a baby is visible, not just the heartbeat.
- Waiting a week can be very stressful. It is reasonable to ask the doctor to explain exactly what they saw and what each result next week would mean.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This cannot tell you whether your pregnancy is continuing. Only the repeat scan and your doctor's assessment can show that.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- How far along does the pregnancy measure on this scan?
- What exactly will you look for on the repeat scan?
- If the repeat scan is not reassuring, what are the options?
- Which symptoms mean I should come back before the repeat scan?
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 get heavy bleeding, severe or one-sided belly pain, shoulder-tip pain, or feel faint.
Get help the same day
- Get care the same day if you start bleeding or have cramping pain before the repeat scan.
Book an appointment soon
- Attend the repeat scan on the date given, even if you feel well.
Sources
The evidence this explanation is built on.
- Miscarriage MedlinePlus (NIH)
- Miscarriage NHS
- 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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