By the end of the week your baby will be 4-6 mm Crown to Rump (CR) – about the size of a small bean.
The ears, eyes, nose and internal organs are developing and the baby is moving about in the amniotic sac.
You produce more blood during pregnancy. This and an increase in hormones can cause you to see bleeding gums occasionally.
Facial features such as the nose and mouth are developing, but the eyelids will be closed until around 27 weeks.
All the vital organs such as the kidneys, liver and lungs, are now in place and begin to grow and develop rapidly.
Not only are fingers and toes separated, or separating, by now, but fingernails are starting to appear. The iris is formed in the eye.
The baby will be kicking and stretching but you won’t feel it until it’s big enough to be pushing against you.
This is the end of the first trimester, the first third of pregnancy. Your risk of miscarriage drops greatly.
You are now officially in the second trimester. Your midwife will be able to feel the top of your growing womb.
The baby’s need for oxygen has increased and so your heart will have enlarged to pump about 20% more blood.