A colon polyp is a small clump of cells that forms on the lining of the colon. Most colon polyps are harmless. But over time, some colon polyps can develop into colon cancer, which is often fatal when found in its later stages. Anyone can develop colon polyps. You're at higher risk if you're 50 or older, are overweight or a smoker, or have a personal or family history of colon polyps or colon cancer. Colon polyps often don't cause symptoms.
A pregnancy is divided into trimesters: 1  the first trimester is from week 1 to the end of week 12. 2  the second trimester is from week 13 to the end of week 26. 3  the third trimester is from week 27 to the end of the pregnancy.
It is often referred to in three parts called trimesters. The first trimester lasts 12 weeks, the second from 13 to the end of 27 weeks, and the third from 28 to 40 weeks. These divisions are somewhat arbitrary and you may encounter slightly different versions of these time periods during your pregnancy.lthough you will probably gain about 25 to 30 pounds (11 to14 kilograms) during the course of your pregnancy, only a small percentage of this amount will be gained during the first trimester. You may experience few signs of pregnancy and gain only 3 to 4 pounds.