Question: does being overweight increase your chance of miscarriage?
Answer: Possible problems if you're overweight in pregnancy The higher a woman's BMI, the higher the chance of complications. The increasing chances are in relation to: miscarriage – the overall chance of miscarriage under 12 weeks is 1 in 5 (20%); if you have a BMI over 30, the chance is 1 in 4 (25%)