👶Your baby this week
Your baby now measures about the length of a tube of nappy cream, roughly 14.2 centimetres from head to bottom and is far more active in the womb.
Hearing, touch, swallowing and sucking reflexes are developing. Many babies now yawn and hiccup, and you might soon feel those tiny rhythms.
Fine details are taking shape: fingernails lengthen and one-of-a-kind fingerprints form on fingers and toes.
The nervous system is maturing quickly as a fatty coating called myelin begins to wrap nerves, helping messages travel faster.
Arms and legs are stronger, so wriggles, rolls and gentle kicks are frequent, even if you only notices fluttering now and then.
If the sex is visible on scan, external genitals may be distinguishable, though not every clinic will share this information.
Facial muscles practise a range of expressions, opening and closing the mouth, tiny frowns and little stretches.
🌸Your body this week
A first sensation of movement may appear as light bubbling, fluttering or rolling, often noticed when you is resting or after a snack.
As the bump grows, balance can feel off and everyday movements a touch clumsier. Supportive shoes and taking time can help.
Blood pressure can be slightly lower than usual; getting up slowly from sitting or lying reduces dizzy spells.
Breasts may have gone up a size, and the skin on the tummy may show a darker vertical line (linea nigra). Both are common and usually fade after birth.
A mid-pregnancy anomaly scan is offered around 18–20 weeks to look carefully at the baby’s development.
A normal increase in thin, milky vaginal discharge (leukorrhoea) may continue. Seek advice if colour, smell or texture changes, or if there’s itching or soreness.
💛Symptoms you might notice
Every pregnancy is different. These are common around week 18 — speak to your midwife if anything worries you.
First Baby Movements (Quickening)
Those gentle flutters may feel like bubbles or a soft flicker. Movements can be more noticeable after meals, when relaxing, or when you talks and rubs your bump.
Dizziness
Lower blood pressure can make you light-headed. Rise slowly, sip water regularly and have small, frequent snacks to steady blood sugar.
Stretch Marks
Pink, red, purple or brown streaks can appear on the tummy, breasts, hips or thighs. Moisturising may ease itch; marks usually fade to silvery lines after birth.
Headaches, Stuffy Nose or Nosebleeds
Hormonal changes and increased blood flow can irritate nasal tissues and gums. Hydration, rest and saline sprays or a humidifier often helps.
Bloating, Constipation and Heartburn
Digestion stays slower in pregnancy. Try smaller, slower meals, stay upright after eating and build fibre and fluids through the day.
Leg Cramps or Swollen Ankles
Gentle calf stretches before bed, walking, hydration and elevating the feet can ease cramps and puffiness.
✨Tips for week 18
Book and Prepare for your Anomaly Scan
This detailed ultrasound (around 18–20 weeks) checks the baby’s development. If you don’t want to know the sex, tell the sonographer before the scan begins.
Notice Movements
Early flutters come and go. Over the next weeks, you will learn your baby’s usual pattern. If movements ever reduce later in pregnancy, contact maternity triage immediately.
Get Up Slowly
To reduce dizzy spells, roll to the side first, sit for a moment, then stand. Keep water and a light snack to hand.
Claim Free Prescriptions and Dental Care
Ask for the FW8 form to get a Maternity Exemption Certificate (MatEx). It covers NHS prescriptions during pregnancy and for up to a year after the due date, and NHS dental treatment too.
Pelvic Floor Exercises
Daily squeezes (as if stopping mid-wee) help prevent leaks when you laughs, coughs or sneezes. Aim for several short sets across the day.
Dress for Balance and Comfort
Choose supportive, flat footwear and clothing that doesn’t dig in. A well-fitting maternity bra can ease breast tenderness.
Eat Well, No ‘Eating for Two’
Focus on colourful fruit and veg, whole grains, lean proteins and dairy or fortified alternatives. Little and often can help with heartburn and energy dips.
Keep Moving, Gently
Aim for up to 150 minutes of moderate activity a week if comfortable — walking, swimming or prenatal yoga support mood, sleep and circulation.
Vitamin D and Lifestyle
Continue a daily 10-microgram vitamin D supplement (especially October–March). Avoid smoking and alcohol and keep caffeine to a sensible minimum.
Work and Rights
When you tell your employer, you have maternity rights, paid time off for antenatal appointments and the right to a workplace risk assessment.
Know When to Seek Help
Contact a midwife or maternity unit urgently for heavy bleeding, severe or persistent abdominal pain, fever, painful urination, unusually severe headaches, or a sudden change in usual pregnancy symptoms.