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1st, 2nd and 3rd trimesters.
Wiki User
∙ 12y ago
The stages of pregnancy typically include conception, implantation, embryonic development, fetal development, and childbirth. Conception occurs when a sperm fertilizes an egg, and implantation happens when the fertilized egg attaches itself to the lining of the uterus. The embryonic stage begins after implantation and lasts for about 8 weeks, during which major organs and body systems develop. The fetal stage starts at around 9 weeks and continues until birth, with the growing baby gaining weight and further developing its organs and systems.
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