The levels of the hormone known as hCG (human Chorionic Gonadotrophin), change during the first trimester of your pregnancy. HCG levels are what are measured in order to determine whether or not you are pregnant. The hormone hCG is produced by cells that make up the placenta. The placenta, of course, is what provides nourishment to your baby after the fertilized egg becomes attached to the wall of the uterus.
One of the most common, and often one of the most marked symptoms of pregnancy tends to be the various changes that take place in the breasts. During the entirety of your pregnancy, including during the second trimester, your breasts are going to go through various changes. Your breasts are preparing for your baby's arrival, and preparing for their role as your baby's first source of nourishment.
Abdominal cramps during the second trimester are, generally speaking, something of a cause for concern. In fact, abdominal cramps during any of the trimesters of pregnancy may be a cause for concern. However, having said that, the fact of the matter is that mild cramping can occur during pregnancy without there being something else wrong. Knowing what to look for in terms of abdominal cramps during the second trimester is an important part of maintaining a safe and healthy pregnancy.
The last trimester of pregnancy brings along some very uncomfortable times for moms-to-be. Trying to find comfortable positions to sit, sleep and even stand can be difficult. Getting comfortable at night, so you can awake feeling well rested is usually one of the most common complaints during the third trimester.