The information presented on this website has been developed and reviewed by Besins Healthcare. It should not be used as a substitute for professional medical advice, diagnosis, or treatment from a qualified healthcare professional.

Week-by-Week Guidance / Milestones


Take your time with this information

Week 22

You are 5.5 months into your pregnancy, which means 18 more weeks until your due date.1



Your body

Additional weight gain around the abdomen during pregnancy can alter your centre of gravity. This can impact physical movement and the distribution of pressure on your feet during movement.2 These changes, in addition to increased relaxin that loosens the ligaments in your feet,1 can lead to your feet increasing slightly in size.1,2

Symptoms1

  • Headaches
  • Dizziness
  • Constipation
  • Oedema (swelling, specifically hands or ankles)
  • Pelvic girdle pain and back ache
  • Leg cramps
  • Foetal movement

Your baby

At 22 weeks gestation, your baby should measure approximately 27.9 cm and weigh around 450 g.1

At 22 weeks, the spleen, which is the organ that helps fight infection, is becoming more mature. The two immune cells, Type T and Type B lymphocytes, start organising into their own areas that are critical for how they respond to and fight infection.3

Things to remember this week

  • Consistently taking folic acid is recommended,4 or if you haven’t already, consider taking a prenatal supplement that has the recommended amounts of vitamin A and D, iron and calcium5 which will also help support your oral health6
  • Book your routine dental check up to help support your oral health during pregnancy6
  • Staying active and keeping a healthy weight can help support overall health7
  • Try to avoid alcohol consumption and smoking – both are known as risk factors for miscarriage8,9
  • Nourish your body with pregnancy-safe foods. Try to avoid foods high in mercury, such as mackerel and tuna, raw seafood, undercooked meat, poultry and eggs, unpasteurised foods and cheese with a mould rind such as brie, unwashed fruits and vegetables, and any type of herbal tea10
  • Limit caffeine consumption to no more than 200 mg per day11     
    As a guide:     
    1 mug of coffee contains 100 mg of caffeine     
    1 mug of tea contains 75 mg of caffeine     
    1 can of cola contains up to 40 mg of caffeine     
    1 bar of chocolate contains up to 50 mg of caffeine