Week 18 Pregnancy
You are 18 weeks pregnant and in your second trimester. Your baby is about the size of a bell pepper. This week's key development: Halfway Almost There. NHS note: The anomaly scan is usually booked for between 18 and 21 weeks.
Baby's Development
Your baby is about the size of a bell pepper.
Halfway Almost There — Your baby is yawning, hiccuping, and swallowing amniotic fluid — good practice for feeding after birth. If you're having a girl, her uterus and fallopian tubes are fully formed. If you're having a boy, his genitals are now visible on a scan.
Your Symptoms
- Dizziness
- Swollen feet
- Leg cramps
Every pregnancy is different. You may experience all, some, or none of these symptoms — and that's completely normal. If anything concerns you, speak to your midwife.
NHS Appointments
The anomaly scan is usually booked for between 18 and 21 weeks.
Practical Advice for Week 18
Nutrition
- Continue vitamin D daily.
- Eat slowly and sit upright after meals to reduce heartburn.
- Iron-rich foods remain important — your blood volume is still increasing.
- Include protein with every meal — it helps you feel full and supports baby's growth.
Exercise
- Keep moving — moderate exercise reduces the risk of gestational diabetes.
- Ankle circles and foot exercises can help with swelling.
- If dizziness occurs during exercise, stop, sit down, and drink water.
- Consider a pregnancy support belt if back pain is becoming troublesome.
Wellbeing
- Leg cramps can strike at night — stretching calves before bed helps.
- Swollen feet are common — elevate them when resting.
- Stand up slowly to avoid dizziness as your blood pressure adjusts.
- If you're feeling emotionally flat, talk to someone — your midwife, partner, or a friend.
Preparation
- The anomaly scan is usually booked between 18 and 21 weeks.
- Write down any questions for your sonographer — they're happy to explain what they see.
- Start thinking about what you need for the baby's arrival — keep a running list.
- Research local NCT groups or bumps-and-babies groups for social support.
Tip of the Week
When standing up, do it slowly to avoid dizzy spells as your blood pressure adjusts.
Track Your Due Date
Keep track of your pregnancy milestones, NHS scans, and countdown to your due date.
Go to TrackerNHS Resources
Find trusted information on financial support, antenatal classes, and local maternity services.
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