WebMD explains the first trimester of pregnancy. You'll find out what to expect during the first trimester, along with signs and symptoms to know you're pregnant.

You can expect to see certain changes to your body in each trimester of pregnancy, but progression and experience vary for most people and from pregnancy to pregnancy.

So, to help you with those unique breakfast ideas, for your first trimester of pregnancy, London Wellness Coach, and nutritional therapist, Lauren Johnson Reynolds, has shared the best ones for you.

The first trimester, starting from the first day of your last period before conception, lasts until the 13th week. Read on to learn about the changes during this phase.

The first few weeks of pregnancy can be so exciting! But when should you tell people around you that you are pregnant? And what should you expect? Learn more about pregnancy weeks 1–13.

Even marijuana use in early pregnancy can significantly harm a developing fetus, a new study found, putting children at risk for developmental delays, higher rates of ADHD and learning ...

First Trimester (1–12 Weeks): The foundation of life The first trimester is a critical time for fetal growth since the major organs and structures of the body start to develop.

The first three months of your pregnancy are the most critical. WebMD tells you how your baby's growing.