Think of your uterus as a stretchy rubber balloon that expands on an as-needed basis. This muscular organ is located above the bladder and in front of the rectum. It is held in place by strong ligaments, and it is remarkably elastic, stretching to about 500 times its prepregnancy size. It grows in weight too, from a couple of ounces to more than 2 pounds. When your pregnancy is over, the uterus returns to its original size.
Originally published in You & Your Baby: Pregnancy.
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