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Enter first day of last period (mm/dd/yy) |
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Days Menstruation period |
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| First Trimester |
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Conception |
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Length 0.04". Embryonic development. Cardiac contractions. |
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Length about 0.125", Neural Tube Closes. Limb buds |
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Heart beat, eyes form under the skin |
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Length 2", First week of fetus. Head tucked to chest. |
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Brainwaves detectable |
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All structures formed |
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Length 3.2", Weight 2.2 oz |
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Last day of first Trimester by development |
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Last day of first Trimester by 40 week gestation |
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Last day of First Trimester by 38 Week Conception |
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| Second Trimester |
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Can hear outside sounds. Toe and finger nails. Eye brows and eye lashes |
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Placenta provides nourishment. Gender visible |
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Length 6.3", Weight 5 oz |
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Length 7.8", Weight 11 oz Milk teeth formed in the gums |
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Length 9.8" length, Weight 14 oz. |
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Halfway through gestation (20 weeks LMP) |
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Halfway through conecption (19 weeks conception) |
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Length 12.6", Weight 1 lb 2 oz |
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Skin starts to turn opaque |
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Length 13.2", Weight 1 pound 12 oz |
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Last day of second trimester by development |
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Last day of second trimester by 40 week gestation |
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Last day of second trimester by 38 week conception |
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| Third Trimester |
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Open Close eye lids |
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Eyes can distinguish between light and dark. |
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Length 16.5", Weight 4 lb 8 oz |
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Length 19", Weight 6 lb 12 oz |
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Head engaged in pelvis area |
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Early born. |
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Length 21", Weight 7 lb 10 oz |
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| Expected Due Dates |
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Single birth traditional 40 week gestation |
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Modern method 2nd pregnancy single birth |
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Modern method First single born |
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Twins |
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