First Trimester
First trimester of pregnancy is from conception to the 13th week, during the first trimester you will feel a variety of unpleasant conditions

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The first trimester is from conception to the 13th week. This is when you will notice the first symptoms and possibly feel a variety of unpleasant but temporary conditions like morning sickness and exhaustion. Generally, the side effects will pass by the time you end your first trimester and your body has adjusted to the rapid changes to your body. During the first trimester and up to the sixth week, the miracle growing inside your body is called an Embryo. Once past that time, the Embryo changes to a Fetus and will stay that way until birth at which time the Fetus passes through the birthing canal and then officially becomes a Baby.

Although you will feel many things happening that confirm your pregnancy, most people will not yet be able to see from appearance that you are pregnant. At first, you will not gain much weight, and even though you will soon see small changes in the size of your abdomen, it will not be enough for people to notice.

However, on the inside, your body is changing rapidly and the embryo is growing at an amazing rate, with changes taking place daily. This is the most significant phase of a pregnancy for a number of reasons.

During the first trimester, you will only gain approximately three pounds, with less than two ounces of this being the fetus! Most of the weight will be the placenta and amniotic fluid, which surrounds and protects the fetus. Some of the weight is also be attributed to your increased blood supply, which is needed for your heart to support the growing fetus and can be as high as a 20% increase. Additionally, your uterus is now expanding as it accommodates the growing fetus.

Your doctor will want to do several tests during the first trimester, including a Pap Smear, Rubella screening, blood typing, and Rh factor. These tests are performed to look for any possible complications and to provide both you and your unborn baby with the best possible care during your pregnancy.

The first trimester will progress quickly, with some major changes happening to you and your fetus. The calendar below will show you the miraculous changes that are occurring during the first trimester. Keep this information close by as reference so you can continue to marvel in your pregnancy.

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