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Pregnancy Week by Week
(First, Second, and Third Trimester)

Pregnancy facts*

*Pregnancy facts medical author: Melissa Conrad Stöppler, MD

  • A normal pregnancy lasts about 40 weeks and is grouped into three trimesters .
  • Symptoms of early pregnancy include the absence of menstrual periods, breast changes, tiredness, nausea, mood swings, or other symptoms.
  • A pregnancy test measures the hormone human chorionic gonadotropin in the urine or blood.
  • Symptoms of late pregnancy can include heartburn, difficulty sleeping, swelling of the ankles or fingers, hemorrhoids, and mild contractions.
  • By the end of 37 weeks, a baby is considered full term and its organs are ready to function on their own.
  • As you near your due date, your baby may turn into a head-down position for birth. Most babies "present" head down.
  • Babies at birth typically weigh between 6 pounds 2 ounces and 9 pounds 2 ounces and are 19 to 21 inches long. Most full-term babies fall within these ranges.

Introduction

Pregnancy lasts about 40 weeks, counting from the first day of your last normal period. The weeks are grouped into three trimesters (TREYE-mess-turs). Find out what's happening with you and your baby in these three stages.

Medically Reviewed by a Doctor on 3/14/2014

Patient Comments

Viewers share their comments

Pregnancy - Describe Your Experience Question: Please describe usual or unusual experiences had with your pregnancy, food cravings, morning sickness, edema (etc.)
Pregnancy - Signs Question: How did you find out you were pregnant?
Pregnancy - Morning Sickness Question: Did you suffer from morning sickness during your pregnancy? What helped relieve your symptoms?
Pregnancy - Heartburn and Indigestion Question: Did you have heartburn or indigestion during your pregnancy? What helped to relieve symptoms?
Pregnancy - Stretch Marks and Skin Changes Question: What skin changes did you notice during your pregnancy? How did you treat them?
Source: MedicineNet.com
http://www.medicinenet.com/pregnancy/article.htm

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