You'll be weighed at your booking appointment, but you will not be weighed regularly during your pregnancy. Your height and weight are used to calculate your body mass index (BMI).

If you are overweight you have an increased risk of problems during pregnancy.

You're likely to put on 10 to 12.5kg (22 to 28lb) in pregnancy after being 20 weeks pregnant. Much of the extra weight is because the baby is growing, but your body also stores fat for making breast milk after birth.

Talk to a doctor or midwife if you are concerned about your weight.

It's important to have a healthy diet in pregnancy and do regular exercise during your pregnancy.

Learn more:

• Places to deliver your baby
• High-risk pregnancy
• Ultrasound scans in pregnancy
• Blood type and rhesus test
• Gestational diabetes
• Iron deficiency anaemia
• Blood tests and scans
• Blood pressure tests
• Antenatal urine tests