The first trimester is not well known for producing big pregnant bellies that require maternity clothes. But there are plenty of women who will tell you that the belly is what they feel the most in these early days of pregnancy, even before they've made pregnancy announcements. The truth is when it comes to belly growth in the early moths of pregnancy, it is typically not from the uterus, but rather bloating and gas. Now, some moms will tend to show sooner than others, like moms who have had a baby before or women carrying twins or other multiples. Here you can see the wide range of normal pregnant bellies from the first trimester bellies!