The size of the abdomen depends on many factors, but most of them are under the control of the expectant mother. Eat right, move more, lead a healthy lifestyle!
As your belly grows, you will have to make some adjustments to your life, but modern industry allows you to do this with a minimum of discomfort. Remember that pregnancy is the happiest period in the life of every woman, and nothing compares to it except the birth of your little copy!