Early assessment
Location, number of pregnancies and early development when clinically appropriate.
A stage-by-stage guide
Pregnancy Scan Timeline
A practical overview of the scans commonly discussed through pregnancy, what each one is designed to assess, and why an individual schedule may differ.
Book a pregnancy scan
Early pregnancy11–14 weeksMid-pregnancyLater pregnancy
What this examination is designed to review.
First-trimester assessment
Dating, NT / NB assessment and screening discussions within the relevant window.
Detailed anatomy
A structured review of fetal anatomy in mid-pregnancy.
Growth and wellbeing
Later assessment when growth, fluid, placenta or blood flow needs review.
From the reason for the visit to the next useful step.
The exact plan may change with clinical findings, pregnancy stage and individual preference.
- 01
Use your prescription
Book the exact examination named by your clinician whenever one has been prescribed.
- 02
Share your dates
Reception may ask the first day of your last period or the estimated due date.
- 03
Bring earlier reports
Previous scans help the sonologist understand the pregnancy sequence.
- 04
Expect an individual plan
A finding may lead to a different follow-up schedule from the general timeline.
Why this page matters
The right scan depends on the question, not only the week.
Pregnancy dates provide a useful starting point, but symptoms, earlier findings, multiple pregnancy and maternal health can change which scan is appropriate and when it should happen.
Questions about pregnancy scan timeline
These answers are general. Individual advice depends on the clinical history and assessment.
Reception can help with appointment details
No. The clinical question, pregnancy dating, symptoms, previous findings and individual risk can change timing.
Call your obstetrician or reception promptly. The next appropriate assessment depends on your current pregnancy stage and the reason for the scan.
Not always. Twin pregnancies may require additional assessment, and monitoring depends partly on placental and amniotic-sac arrangement.
Not necessarily. Different scans answer different questions, and later assessment may still be recommended.
Use the timeline for context, but follow the scan or consultation advised for your pregnancy.