– Pregnancy usually lasts about 40 weeks, or just over 9 months
– Pregnancy is divided into three trimesters
– First Trimester: Conception occurs, fertilized egg implants in uterine wall
– Second Trimester: Sex of baby can often be determined, movement can be felt, footprints and fingerprints form, survival rate for babies born at 28 weeks is 92%
– Third Trimester: Bones become almost fully formed at 32 weeks, infants born before 37 weeks are considered preterm and at risk for complications such as developmental delays, vision and hearing problems, and cerebral palsy, infants born between 34 and 36 weeks are considered “late preterm,” infants born at 37-38 weeks are now considered “early term” and face more health risks than those born at 39 weeks or later, full-term infants born at 39-40 weeks have better health outcomes, infants born at 41-41 weeks and 6 days are considered late term, infants born at 42 weeks and beyond are considered post term.
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