Your prenatal appointments, week by week (US and UK)
Two systems, one rhythm: visits get closer together as your due date nears. Here is what happens at each one, and what to ask.
Updated October 13, 2026 · sources checked October 13, 2026
In short
In the US, a typical low-risk schedule is a prenatal visit every month until 28 weeks, every two weeks until 36 weeks, then weekly until birth. In the UK, the NHS offers at least 10 antenatal appointments for a first baby (at least 7 if you have given birth before), plus scans at 11 to 14 and 18 to 21 weeks. Your midwife or OB adapts this to you.
The rhythm of prenatal care
Visits start spread out and come closer together as your due date approaches, because that is when blood pressure, growth and the baby's position need watching most. Both the US and UK schedules below are for a pregnancy without complications; if you have a health condition, twins or a problem appears, you will be seen more often.
Not sure how far along you are? Our due date calculator gives you your week and due date.
United States: visit frequency
The Office on Women's Health (US Department of Health and Human Services) gives this typical schedule for a healthy pregnancy:
| Weeks of pregnancy | How often |
|---|---|
| 4 to 28 | Once a month |
| 28 to 36 | Twice a month |
| 36 to birth | Every week |
Key US tests and when they happen
| When | What | Source |
|---|---|---|
| First visit, first trimester | Blood type and Rh factor, urine tests, screening for infections such as hepatitis B, hepatitis C and HIV | ACOG |
| 11 to 14 weeks | Optional first-trimester screening (blood test plus nuchal translucency ultrasound) | OWH |
| 18 to 22 weeks | At least one standard ultrasound exam, usually in this window | ACOG |
| 24 to 28 weeks | Glucose screening for gestational diabetes (earlier if you have risk factors) | ACOG |
| 27 to 36 weeks | Tdap vaccine, as early in the window as possible, in every pregnancy | ACOG |
| 36 to 38 weeks | Group B strep (GBS) swab | ACOG |
More on the glucose test in our gestational diabetes guide.
United Kingdom: the NHS antenatal schedule
The NHS offers at least 10 antenatal appointments for a first baby and at least 7 if you have given birth before, plus 2 ultrasound scans. You start by referring yourself to NHS maternity services as soon as you know you are pregnant.
| When | Appointment | What happens |
|---|---|---|
| 8 to 12 weeks | Booking appointment (about 1 hour) | Your health and history, blood pressure, urine test, blood group; your maternity notes |
| 11 to 14 weeks | Dating scan | Due date, development, number of babies; optional screening for Down's, Edwards' and Patau's syndromes |
| 16 weeks | Midwife | Screening results, blood pressure, urine |
| 18 to 21 weeks | 20-week screening scan | Checks the baby's development |
| 24 to 28 weeks | Test for gestational diabetes | Only if you have a higher chance |
| 25 weeks | Midwife (first baby) | Blood pressure, urine, bump measured, baby's movements, mental health, birth preferences |
| 28 weeks | Midwife | Blood tests (iron, blood group), an injection if your baby is at risk of rhesus disease, bump, movements; RSV vaccine offered around now |
| 31 weeks | Midwife (first baby) | Preparing for birth, knowing when you are in labour |
| 34 weeks | Midwife | Birth preferences, checks |
| 36 weeks | Midwife | Baby's position felt, checks |
| 38 weeks | Midwife | Options if you go past 40 weeks |
| 40 weeks | Midwife (first baby) | Options if you go past 40 weeks, checks |
| 41 weeks | Midwife | Options if you are still pregnant after 41 weeks |
The NHS also recommends the whooping cough vaccine, usually at 20 weeks (possible from 16 weeks, ideally before 32), and the flu vaccine in season.
How many visits is enough?
As the Cochrane authors point out, the number of visits in standard schedules was set without evidence of how many are needed. A Cochrane review of seven trials with over 60,000 women found that in high-income countries, programmes with fewer visits showed no clear difference in perinatal deaths, but in settings where visits were already few, cutting them was linked with more perinatal deaths, and women preferred the standard schedule (Dowswell et al., 2015). Since 2016, WHO recommends a minimum of eight contacts, the first in the first 12 weeks.
Printable checklist: questions to bring
Our pregnancy checklist by trimester gathers every date into one printable list.
Is this normal? When to call
Feeling anxious before a scan, or having questions between visits, is completely normal: the NHS says you can contact maternity services at any time and do not have to wait for your next appointment. Some signs need a call straight away, listed below. For urgent advice in the UK, NHS 111; in an emergency, 911 (US) or 999 (UK).
- A change in your baby's usual pattern of movements: call your midwife or maternity unit immediately, day or night (NHS).
- Bleeding, severe headache, vision problems, sudden swelling of face, hands or feet, or severe pain: call your maternity unit or OB straight away.
- Emergencies: 911 (US) or 999 (UK). For urgent advice in the UK: NHS 111.
Questions parents ask
How many prenatal appointments will I have?
In the US, a low-risk pregnancy following the monthly, fortnightly, then weekly rhythm usually means around a dozen or more visits. In the UK, the NHS offers at least 10 appointments for a first baby and at least 7 if you have given birth before. WHO recommends a minimum of eight contacts.
When is the first prenatal appointment?
In the UK, the booking appointment with a midwife is usually at 8 to 12 weeks; you can refer yourself as soon as you know you are pregnant. In the US, call your OB or midwife's office when you get a positive test; they will tell you when to come in.
Can my partner come to appointments?
Yes. The NHS says a partner can come to appointments if you would like them to, and US practices generally welcome a support person.
What if I am worried between appointments?
Do not wait. The NHS says you can contact maternity services at any time, and any change in your baby's usual movements needs a call to your midwife or maternity unit straight away.
Sources
- Office on Women's Health (HHS) — Prenatal care and tests checked October 13, 2026
- NHS — Your antenatal care and appointments checked October 13, 2026
- ACOG — Routine Tests During Pregnancy checked October 13, 2026
- ACOG — Ultrasound Exams checked October 13, 2026
- ACOG — The Tdap Vaccine and Pregnancy checked October 13, 2026
- NHS — Vaccinations in pregnancy checked October 13, 2026
- WHO — New guidelines on antenatal care for a positive pregnancy experience (2016) checked October 13, 2026
- Dowswell T et al. (2015), Cochrane — Alternative versus standard packages of antenatal care for low-risk pregnancy (PMID 26184394) checked October 13, 2026
Mamavela explains; it does not replace your midwife, doctor or pediatrician, who know your situation. If something worries you, call them. In an emergency, call 911 (US), 999 (UK) or 112.