Your baby is about 2 ½ inches long and weighs about half an ounce.
Fingers and toes are separate and the baby can move them, even perhaps being able to clench his or her fist. The beginnings of teeth are forming under the gums, and the bones are starting to harden. A special layer of skin is growing on the toes and fingers, which will eventually become nails. Your baby’s head accounts for almost half of her entire length. Both the fingers and the toes have separated. The baby’s skin is still very transparent, but her bones are beginning to harden. The external genitalia have almost completely formed, and in several weeks you might be able to know if you are having a boy or a girl.

Your baby’s heart beats very fast, about twice the rate of its mother. It can be seen on an ultrasound scan or heard using a Doppler scan, which measures the flow of blood. You might be offered a nuchal fold translucency test. This measures the amount of fluid between two layers of skin behind your baby's neck, and is another test for Down’s syndrome. Calcium is an important part of your pregnancy diet, as your baby needs it to form healthy bones and teeth. It can be found in dairy products, broccoli, wholegrain cereals and sardines. Cheese is a good source of calcium but remember that you should avoid soft and blue veined cheese, such as Stilton.

 Some women notice changes in their hair, fingernails, and toenails, such as increased nail and hair growth. This is normal during pregnancy. This is possibly due to either the increase in circulation or hormone changes.
If you have been suffering from morning sickness during these first several weeks of pregnancy, you may have actually lost weight instead of gaining weight. Try not to worry; most women only gain 3 to 4 pounds during the first trimester.  

Take time to read a pregnancy books with your partner on a regular basis. This will provide an opportunity for the two of you to discuss fears and excitements together.