25 Weeks A full-term pregnancy is roughly 40 weeks. When a baby is born at 25 weeks, which is about 15 weeks early, they miss an entire trimester of development in the womb. It is a very scary time for everyone involved, and these babies have the odds stacked against them. My twins were born at 25 weeks, 5 days. I still remember the neonatologist giving us the statistics on … [Read more...]