The outside world won't see any sign of the dramatic developments taking place inside you but tiredness and nausea can make you feel low, especially as you may not have told anyone at work that you're pregnant yet. To compensate, offload as much as you can at home and involve your partner in your pregnancy at the same time. Try to prioritise rest and see your GP if sickness is making your life miserable or if you really can't keep anything down. Distraction can help - have a think about the sort of antenatal care and birth you'd like, you do have some choice in the matter - find out more.
You may have thought that disturbed nights start when the baby has arrived, but many women find their sleep is disrupted right from the start of pregnancy. Sometimes the cause is physical - your growing uterus puts pressure on your bladder necessitating trips to the loo throughout the night. Or perhaps sore boobs mean that you can't get comfortable or you wake up in need of a midnight feast.
The embryo is the size of a lentil this week. If you could see inside yourself, you'd find the fetus has an oversized head in proportion to its body. The embryo's facial features are forming with dark spots where the eyes are, openings where the nostrils will be, and pits to mark the ears.
Protruding buds that will become the arms and legs are even more noticeable now. The embryo's hands and feet look like paddles. Other developments include the growth of the pituitary gland and muscle fibres. You can't hear it yet, but the heart (which has divided into the right and left chambers) is beating at about 150 beats a minute -- twice the rate of yours.
Halfway through this week, the embryo makes its first movements. Unfortunately, you'll have to wait until sometime in the second trimester before you get to enjoy feeling your baby's exercise
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