A premature baby, also known as a preemie or a preterm baby is medically classified as a child born at 36 weeks or less which roughly is 8 months and a two weeks into the pregnancy. Preterm babies are classified as late preterm at 34 to 37 weeks, moderately preterm at 29 to 33 weeks, and extremely preterm at 23 to 28 weeks. At 35 weeks the baby has reached around the size of a cabbage or a cantaloupe and is about 18 inches long, weighing in around 5 pounds. Though the baby has finished forming their kidneys and lungs they still run a high risk for respiratory distress syndrome (RDS).