13 Weeks...

Your belly may soon be noticeably bigger, but your baby is still tiny. He's about 3 inches long — roughly the size of a jumbo shrimp — and weighs about an ounce. His tiny, unique fingerprints are already in place. His kidneys and urinary tract are functional, and he's starting to excrete the amniotic fluid he's been swallowing. As you start your second trimester, most of your baby's critical development will be completed and your odds of miscarriage drop considerably.