Third, the gravitational effect of the moon is just as potent during new moonsâwhen the moon is invisible to usâas it is during full moons. There is a more serious problem for fervent believers in the lunar lunacy effect: no evidence that it exists.
Answer: Each pregnancy is divided into three trimesters. Each trimester is roughly a third of your pregnancy. These three trimesters have different emotional and physical happenings that make them unique. Here is a guided tour through each trimester:
This is just a useful way to describe the changes that are happening in your body: 1  Your first trimester lasts from the very beginning of your pregnancy until you're 13 weeks plus six days pregnant. 2  Your second trimester lasts from when you're 14 weeks to 27 weeks plus six days pregnant.