Being at a healthy weight before pregnancy increases the chances of your pregnancy and baby being healthy. Being overweight in pregnancy can increase the risk of gestational diabetes, the risk of caesarean and the risk of other pregnancy complications.  

If you have a low or raised BMI, further information and resources on various topics can be found below: 

Weight gain in pregnancy (nhs.uk) - Information about weight gain in pregnancy. 

Obesity and pregnancy (nhs.uk) - Information about obesity and pregnancy. 

Underweight during pregnancy (tommys.org) - Information about being underweight during pregnancy.