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Weeks 4-8

pregnancy adviceYou are already classed as around 4 weeks pregnant by the time you miss your first period as pregnancy begins on the first day of your last menstrual cycle.

So what happens in the second month of pregnancy?

By 5 weeks, the embryo is the size of a peppercorn.

five weeks pregnant baby size of a peppercorn


The embryonic stage of pregnancy lasts around 5 weeks. This is when the major internal organs start developing. Although very tiny at less than 1/5 inch (4–5 mm) long the embryo’s heart is now beating and its circulation system is beginning to develop

The embryo’s arms and legs begin to develop into little buds and the bud of a tail also begins to form. The umbilical cord begins to take growth and the neural tube begins to develop. Later this will become your baby’s brain, spinal cord and nervous system

During weeks 7 and 8 the embryo has grown to 1/4 to 1/2 inch (7–14 mm) long. The heart is now formed, those little budding arms now bend at the elbow and webbed fingers and toes can now be seen.

The embryo now has visible ears, eyelids and a forming upper lip. The liver is also beginning to form.

Pregnancy symptoms often become very noticeable when you’re 2 months pregnant. Symptoms such as; breast tenderness, exhaustion, frequent urination, heartburn, nausea and sickness are common complaints.