I didn't expect it -- I used to have to take three bars to sleep. But last night I woke up at 4 am, put on sweatpants and an army jacket, and walked eight blocks to this deli that makes submarine sandwiches and got one, along with two Cokes, a Nantucket Nectars lemonade and two bags of chips.
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.
Pregnancy is measured in trimesters from the first day of your last menstrual period, totaling 40 weeks. The first trimester of pregnancy is week 1 through week 12, or about 3 months.The second trimester is week 13 to week 27. And the third trimester of pregnancy spans from week 28 to the birth.Your baby will change from week to week.To learn more about how your baby is changing each month and about what tests you might think about having, see the Interactive Tool: From Embryo to Baby in 9 Months.regnancy is measured in trimesters from the first day of your last menstrual period, totaling 40 weeks. The first trimester of pregnancy is week 1 through week 12, or about 3 months.