Derailment (thought disorder) In psychiatry, derailment (also loosening of association, asyndesis, asyndetic thinking, knight's move thinking, or entgleisen) is a thought disorder characterized by discourse consisting of a sequence of unrelated or only remotely related ideas. The frame of reference often changes from one sentence to the next.
But remember -- you want to be sure you deliver a full term baby if possible. Pregnancy lasts for about 280 days or 40 weeks. A preterm or premature baby is delivered before 37 weeks of your pregnancy. 1  Extremely preterm infants are born 23 through 28 weeks.  Moderately preterm infants are born between 29 and 33 weeks.
Your first trimester prenatal schedule may not differ from that of a single pregnancy; however, you may discover that your healthcare provider wants to see you every two to three weeks. Once you enter into your second trimester, you should expect to have two prenatal visits per month. During the third trimester you should anticipate weekly prenatal appointments. Your healthcare provider may change the amount of appointments based on the health of you and your babies.