During week 13, pick up a clementine—that's how big your baby is now! For more on your little one's fetal development (big stuff happens this month), check out .<br /><br />During week 20 of pregnancy, you'll be halfway through the experience, but that doesn't mean that fetal development stalls here! Learn what your baby is up to.<br /><br />Your baby is about the size of an orange this month, and growing! See what's happening during weeks 13 to 16.<br /><br />By week 41, fetal development is complete and many doctors will induce labor to ensure that your baby is safe—-and that you don't go crazy! .