Posterior uterine pregnancies may appear smaller than anterior uterine pregnancies at the beginning of the pregnancy, but there is no significant difference in the later stages of the pregnancy. Because a posterior uterus is a uterus that is slightly tilted backward, a woman with a posterior uterus will have a smaller stomach than a woman with an anterior uterus, for the same size uterus. So in the early stages of pregnancy, the uterus has not begun to significantly increase the case, looks relative to the anterior uterus for the time to show pregnancy later, and the same time, the uterus tummy may look a little smaller, but as the weeks of pregnancy, the uterus continued to grow, this gap will not be very obvious.