The first trimester of pregnancy begins on the first day of your last period, and continues until the end of week 12. This means by the time you are sure you are pregnant, you may already be five or six weeks along! A lot happens during the first three months of pregnancy, and your tiny baby will grow and develop rapidly during this time. You will also experience hormonal, emotional and physical changes. This can be difficult because while you may not look pregnant, you will likely feel pregnant, so now is the time to get plenty of rest and establish habits that will help you throughout the duration of your pregnancy.
Physical and Emotional Changes