scientific study of how many weeks first babies come
Now, according to data from 2011, those born alive at 27 weeks have an 87 per cent chance of surviving, at 28 weeks it is 92 per cent and at 29 weeks, 95 per cent. It means that doctors are working on tinier babies, typically with more complications, than ever before.
First Trimester (0 to 13 Weeks). The first trimester is the most crucial to your baby's development. During this period, your baby's body structure and organ systems develop. Most miscarriages and birth defects occur during this period.