Antenatal Care Timeline: Key Visits, Tests and Scans
A practical pregnancy-care timeline covering early booking, first-trimester screening, anomaly scan, diabetes testing and later birth planning.
Key message: This is an orientation guide, not a rigid schedule. The number of visits and tests changes with medical history, pregnancy findings, number of babies and the local care pathway.
This is an orientation guide, not a rigid schedule. The number of visits and tests changes with medical history, pregnancy findings, number of babies and the local care pathway.
The short timeline
| Approximate window | What may happen |
|---|---|
| As soon as pregnancy is confirmed | Contact the clinic to start care and review medicines and supplements. Do not stop prescribed medicine on your own. Earlier assessment is needed for bleeding, pain or important risk factors. |
| By about 10 weeks | A structured booking visit: medical and pregnancy history, blood pressure, weight and urine, blood group/Rh and antibody screen, full blood count, appropriate infection tests and an individual risk assessment. |
| Around 11-14 weeks | Dating and number-of-babies scan, with discussion of chromosome-screening options such as the combined test or NIPT depending on timing, availability and choice. |
| Around 16 weeks | Review previous results, blood pressure and urine, symptoms and medicines, and prepare for the mid-pregnancy scan. |
| Around 18-21/22 weeks | A detailed anomaly scan to assess fetal anatomy, growth and placenta. Screening cannot detect every condition and some findings need further tests. |
| 24-28 weeks | An oral glucose-tolerance test when risk factors or the local pathway indicate it. After 24 weeks, uterine growth and baby-movement discussions usually become part of follow-up. |
| Around 28 weeks | Repeat selected blood tests according to the plan, review anaemia and antibodies when appropriate, discuss anti-D for RhD-negative patients under the local protocol, and review blood pressure, urine, growth and movements. |
| Around 32-34 weeks | Review growth and wellbeing, prepare for birth, discuss place of birth, labour signs, feeding and postnatal support. Extra ultrasound is arranged when medically indicated. |
| Around 36 weeks | Check the baby's position, review the birth plan and medicines, and make sure you know when to go to hospital. |
| 37-41 weeks | Closer visits according to need to review blood pressure, growth, movements and presentation, and to discuss options if pregnancy continues beyond the due date. |
What is reviewed repeatedly?
- New symptoms, mental wellbeing, medicines, supplements and previous results.
- Blood pressure and urine according to the care plan to identify hypertension or infection early.
- Fetal growth after 24 weeks using uterine measurement, with ultrasound when risk factors or measurements justify it.
- Baby movements once established, with clear advice to contact the maternity service immediately if they change.
- Birth planning, place of birth and how to obtain urgent help.
Do I need an ultrasound at every visit?
- Not usually. Low-risk pregnancies have key scan windows, while growth scans or Doppler studies are added when there are risk factors, unexpected measurements, or concerns about the placenta, fluid or fetal growth.
- Blood pressure, symptoms and measurement of uterine growth remain important even when no scan is needed.
When does the schedule change?
- Twin pregnancy, diabetes or hypertension, thyroid or kidney disease, previous pre-eclampsia or preterm birth, bleeding, fetal-growth concerns, pregnancy after fertility treatment or any abnormal finding may require more visits, blood tests or ultrasound.
- Extra care should be tailored to the reason rather than added automatically to every pregnancy.
What should I bring?
- The first day of your last period if known, plus any pregnancy-test, blood-test or scan results.
- A complete medicine and supplement list with doses, and reports from previous operations or pregnancy complications.
- Your questions and any new symptoms, particularly bleeding, pain, severe headache or a change in baby movements.
Frequently asked questions
Does everyone have the same number of appointments?
No. There is a routine framework, but high-risk pregnancy or abnormal findings need a more intensive individual plan.
When should chromosome screening be discussed?
Early in pregnancy, because each screening option has a specific gestational window.
Does no ultrasound at a visit mean the follow-up is incomplete?
No. Ultrasound is used when it adds useful information; blood pressure, urine, symptoms and growth assessment are also central to care.
What if I start care after 10 weeks?
Arrange care as soon as possible. The clinician will identify which tests are still appropriate and their timing.
Your next step
Book early so a timeline can be built around your history and gestation rather than relying only on a general schedule. Bleeding, severe pain, reduced movements, waters breaking, a severe headache with visual symptoms or breathlessness require immediate contact rather than a routine appointment.
Important: these windows are for orientation and must be adapted to your individual circumstances and local care pathway. The table does not mean every test is required for every pregnancy. Content reviewed: 22 August 2026.
Medical and content review: Dr Mohamed Abdelghany, Obstetrics & Gynecology Specialist, MRCOG (UK), MSc Obstetrics & Gynecology – Kasr Al-Ainy, Cairo University.
Last reviewed: 22 August 2026.
This information is for general education and does not replace individual medical assessment. Severe, sudden or concerning symptoms should not wait for a routine appointment.
