Pregnancy at Weeks 17 to 20

The 18 to 22 week morphology scan is the major planning item in this slice. It is a routine ultrasound that checks the baby's size, growth, body structures, organs, heart, placenta position, cervix, amniotic fluid, and sometimes the baby's sex if you want to know and the position allows it. The scan is offered, but the decision to have it is yours.

It helps to prepare emotionally as well as practically for the scan. You may see the baby clearly, but you may also be told that something needs another look or specialist advice. Ask whether you can bring a support person, where to go, how long the appointment may take, when results are available, and what happens if images are incomplete because of the baby's position.

Your bump may look more obvious by week 19, but comparisons are not useful. Regular antenatal visits are where your care team checks growth, symptoms, blood pressure, wellbeing, and whether anything needs follow-up. Feet, breasts, hips, and overall shape can change as ligaments stretch and the body adapts to carrying more weight.

Body changes can affect confidence, intimacy, relationships, work, and how much attention you want from other people. Anxiety and depression can also appear during pregnancy, especially if you have had mental health concerns before. If panic, constant worry, low mood, mood swings, exhaustion, losing interest in people, thoughts of self-harm, or sleeping too much or not at all lasts more than 2 weeks, tell your doctor or midwife. In an immediate safety emergency, call local emergency services.

Round ligament pain can also show up as aching, cramping, or sharp pain on either side of the uterus as those ligaments stretch. Moving slowly, gentle stretches, rest, or a support band may help some people, but abdominal pain in pregnancy is not something to dismiss automatically. Ask your doctor or midwife if pain is severe, persistent, one-sided, associated with bleeding or fluid, or simply feels wrong.

Clothing and support needs often become more practical in weeks 17 to 20. You may not need a full maternity wardrobe, but flexible waistbands, a bra fitting, borrowed loose tops, comfortable shoes, a support pillow, and layers for changing temperature can make daily life easier. Underwire bras are often less comfortable, and many people prefer pregnancy or maternity bras that can later support breastfeeding.