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Your Baby development in week 17 - 20

Week Seventeen: Fat accumulates

You are 17 weeks pregnant. (fetal age 15 weeks)

Week Eighteen: Baby begins to hear

You are 18 weeks pregnant. (fetal age 16 weeks)

Week Nineteen: Genitals recognizable

You are 19 weeks pregnant. (fetal age 17 weeks)

Week Twenty: The halfway point

You are 20 weeks pregnant. (fetal age 18 weeks)

Congratulations!
You are halfway through your pregnancy, 20 weeks marks the midpoint. Remember, pregnancy is counted as 40 weeks from the beginning of your last period if you go full term.