Home > Trimesters of Pregnancy > First Trimester of Pregnancy

First Trimester of Pregnancy

During the first trimester of pregnancy your baby will have the most developmental changes. You’ll begin an amazing transformation in the first trimester. 

The hormones in your body have already taken control and have started to begin nurturing the baby.

How Long Is The First Trimester of Pregnancy?

The first three months are counted from the last menstrual cycle.  The first trimester goes all the way into the 13th week of the pregnancy.

First Trimester Weeks

Month of Pregnancy             Week by Week

First Month                            1-2, 3, 4

Second Month                       5, 6, 7, 8

Third Month                          9, 10, 11, 12, 13

Conception And Fertilization

Following ovulation, the egg is capable of fertilization for the next 12 to 24 hours.  After fertilization, the implantation starts to attach itself to the uterine wall.  The next step for further development is growing into an embryo, fetus, and then a healthy baby.

What Are The Common First Trimester Symptoms?

The most common first trimester symptoms are nausea, increased urination, severe exhaustion, breast tenderness, vomiting, and morning sickness.

Majority of pregnant women start experience signs and symptoms before they even know there pregnant.

As the weeks go by, you will experience more common signs such as headache, cramps, constipation, indigestion, food aversions, bloating, and mood swings. The body will start increasing your hormonal estrogen and progesterone levels.

How Much Weight Should You Gain In The First Trimester?

The weight gain in the first trimester should be about 1 to 5 pounds.  During the first trimester of pregnancy weight gain is not a serious concern.

When To Announce Your Pregnancy

Many people wait till the end of the first trimester to announced the exciting news of their pregnancy.  Based on American College Obstetricians conclude a 10% to 25% of pregnancies in a miscarriage. A big percentage of miscarriages occur in the first three months.

First Trimester Prenatal Check-up Screening

When you find out your pregnant, the first thing you must do is set up an appointment with your doctor. The first appointment usually occurs within the 8th week of pregnancy.  The routine check up involves growing the embryo for any irregularities.

Things To Keep In Mind

During the first trimester the baby starts to develop nervous system. It’s essential to have a healthy balance diet, prenatal vitamins, and folic acid. During the first trimester you have to also give up alcohol and caffeine.

Join our newsletter to receive pregnancy articles and information on what to expect during the next nine months. You'll get one delightful email per week. 

Personalized Princess Books modernnursery.com Begin life in style!