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Week by week

Week 1

First trimester

Your baby is the size of a Developing Embryo

Length
Weight

This week at a glance

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

Baby

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.

Mother

Nutrition

Folic acidIronBalanced whole foods

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

Tips

Do

Avoid