Pregnancy Week By Week

16 Weeks Pregnant: Development, Symptoms and Care

At 16 weeks pregnant, you might notice a growing bump, changing appetite or the first faint flutter of movement. You might not feel movement yet either. A week-by-week guide can help you understand possibilities, but it cannot tell you how your own pregnancy is progressing.

Your baby’s development at 16 weeks

Your baby is moving their fingers and toes, and toenails are forming. Their face can make different expressions. Movement inside the uterus starts before you are able to feel it, so this is not the week that your baby suddenly begins moving.

Body changes and symptoms

Breast growth, constipation and lower back discomfort can occur around this stage. Your bump may still be subtle, particularly in a first pregnancy. Appetite and energy may improve, but there is no requirement to feel a particular way.

Stretching ligaments around the uterus can cause brief twinges in the lower abdomen or groin. However, do not assume abdominal pain is ligament pain. Tell your clinician about pain, and seek urgent assessment if it is severe, worsening or persistent, or comes with bleeding, fever or feeling unwell.

First movements are not a deadline

Most people first feel movement between 16 and 24 weeks. Early sensations may be a flutter or a small rolling feeling rather than a definite kick. A first pregnancy may take longer to recognise than a later one.

There is no universal daily kick target. If you think movements have reduced or changed, or something worries you, contact your midwife, doctor or hospital maternity unit immediately. Do not wait until tomorrow or until you reach a later week of pregnancy.

Care that makes everyday life easier

For constipation, fluids, fibre-rich foods and activity you can manage may help. If symptoms continue, ask your pharmacist or clinician about options suitable in pregnancy. Back or pelvic pain that limits walking, sleep or daily tasks also deserves help rather than simply being endured.

Keep a short list of the symptoms you want to discuss. Include what brings them on and what helps; this is often more useful at an appointment than trying to remember every detail.

Planning the anatomy scan

The morphology, or anatomy, ultrasound is commonly offered around 18 to 22 weeks. It examines the baby’s developing body and the placenta. The timing recommended by your service may be more specific. A chromosome screening blood test and an ultrasound provide different information.

Ask about a referral, costs, any preparation and how you will receive the results. Scans are a choice, and your care team should explain their purpose and limitations. Read our prenatal tests guide for questions to take along.

When to seek medical help

In Australia, call 000 for heavy bleeding, severe abdominal pain, collapse or a life-threatening emergency. Do not drive yourself if faint or very unwell.

Contact your GP, midwife or hospital immediately for vaginal bleeding, leaking fluid, fever, vomiting that prevents drinking, persistent or worsening pain, severe headache or vision changes. Seek urgent care if you cannot reach them. Do not wait for your next routine appointment.