First Trimester of Pregnancy
The first trimester of pregnancy is the first three months after conception. Signs of early pregnancy are missed menstrual periods, fatigue, breast enlargement, abdominal distention, and nausea. During this period of time all organ development takes place so the fetus is most susceptible to damage from toxins, drugs, and infections.
Related Images
• Early Weeks of Pregnancy
• Folic Acid
• Normal Uterine Anatomy (Cut Section)
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• Abortion - Elective or Therapeutic
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Review Date : 6/30/2000
Reviewed By : J. Gordon Lambert, MD, Associate Medical Director RxRemedy
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