Week By Week Pregnancy Guide Weeks Four To Six
Week 4
Implantation occurs around week four. Cells that are to form the baby, arrive in the uterus and search for a spot to settle down. They split into two groups. Some cells form the baby and others from the uterus.
At the end of this week your period should have been due. Some early pregnancy symptoms are very similar to those experienced at the beginning of a period and include breast tenderness, fatigue and mood swings.
Week 5
The developing embryo has three layers. The top layer is called the ectoderm. The neural tube grows from here and will form the nervous system brain, spinal cord, skin and hair. The middle layer or mesoderm forms the heart and circulatory system, bones, muscles, kidneys and reproductive organs. The circulatory system is the first organ system to function. In the endoderm, or inner layer, a simple tube will develop into the intestines, liver, pancreas and bladder.
By now your period should be late and you may be wondering if you are pregnant. As your hormones change, you may experience breast tenderness, hunger, fatigue, nausea and a frequent need to go to the toilet.
Week 6
By week six, the cells have multiplied to become a tiny embryo. A growth spurt occurs and the umbilical cord develops/ The eyes, ears and mouth begin to develop and the heart starts to pump blood. Other major organs are under construction and tiny buds form on the body that will become the arms and legs.
You may start to suffer from morning sickness (at any time of day!) Morning sickness is particularly strong if you are having a multiple birth. Try to drink lots of water to keep hydrated and don’t hesitate to contact your doctor if you are at all concerned, Food cravings can also begin, whilst the thought of some foodstuffs will make you feel distinctly queasy.
During this time many of your babies organs are starting to develop. Wherever possible try to give up smoking, alcohol, drugs and so on. Because this is a critical time in your baby's organ development, avoid alcohol, substances, drugs, and treatments (perms, hair coloring, manicures, etc.) that you don't really need. If you haven't yet, make your first prenatal appointment with your care provider.
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