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Week by week

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Week 1

First trimester

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About the size of a developing embryo

Your baby is the size of a Developing Embryo

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Length
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Weight

This week at a glance

❤️HeartbeatNot developed yet
🧠Major developmentMenstruation; no embryo yet (dated from LMP)

In standard pregnancy dating, week 1 is counted from the first day of your last menstrual period, so conception has not yet occurred. Your body is shedding the previous cycle's lining and preparing a fresh one.

Nutrition

Folic acidIronBalanced whole foods

Leafy greens · Fortified cereals · Beans and lentils · Citrus fruits · Whole grains

Tips

Do

Avoid