Pregnancy is a wonderful and incredible experience. Pregnancy Calendar is attempting to help you understand your pregnancy and the fetal development taking Preganacy is divided into three trimesters. 1st Trimester 2nd Trimester and 3rd Trimester .

Month - 1

• Tiny limbs open out; these grow into arms and legs. • Formation of heart and lungs; heart starts beating by 22nd day. • Formation of neural tube which later develop into brain and spinal cord. •

Your baby is around ¼ inch in length at the end of first month.

Month -2

• Most body organs form but do not develop fully. • The placenta which exchanges nutrients from your body for waste products produced by the baby, begins to develop. • Eyelids form but are closed. Ears, fingers, toes, ankles and wrists also appear. • Your baby is now 1 inch long and weighs less than 28.3 g. Week-8 Week-12

Month - 3

• Your baby's nails begin developing. • Small buds start forming in the mouth that later grow into teeth. • Soft hair begins to grow. • As your pregnancy progresses, all the body organs of your baby will develop further and the baby gains weight. • Your baby grows to about 2½-3 inches in length.

Month - 4

• You continue to nourish your baby through the umbilical cord. • Your baby displays movement. • Baby's skin is pink and transparent. • Your baby is now about 6-7 inches long and weighs about 0.11-0.14 kg. Week-16 Week-20

Month - 5

• Your baby sleeps and wakes at regular intervals • The baby becomes more energetic and lively and movements become more intense. • Finger and toe prints are formed • The baby is now around 10 inches long and weighs about 0.22-0.45 kg.

Month - 6

• Eyelids begin to part and the eyes open. • The skin becomes red and wrinkled and covered with fine, soft hair. • At the end of 6 months, your baby is around 12 inches long and weighs about 0.68-0.9 kg. Week-24 Week-28

Month - 7

• The baby responds to light and sound. • The baby sucks its thumb, opens and closes its eyes. • The baby constantly kicks and stretches its body. • The baby is now about 15-16 inches long and weighs about 1.13-1.36 kg.

Month - 8

• The brain continues to grow at a fast pace. • Your baby starts rolling around, kicking and stretching. • Sometimes an elbow or heel of the baby against your abdomen can be noticed. • Fingernails grow to the tips of fingers. • Lungs may still not be completely developed. • Sometimes an elbow or heel of the baby against your abdomen can be noticed. • Sometimes an elbow or heel of the baby against your abdomen can be noticed. Week-32 Week-36 Week-40

Month - 9

• The ninth month marks the full term of the baby. • The baby's lungs are completely developed and begin to work independently. • The baby gains a little bit of weight. • The baby usually drops into a head-down position and rests lower in your abdomen. • By the end of ninth month, the baby is 19-21 inches long and weighs about 2.72-4.1 kg. Key points • Growth of the baby takes up to 40 weeks. • Pregnancy is divided into three periods or trimesters, each consisting of 3 months. • Formation of heart and lungs; heart starts beating by 22nd day. • During the fifth month the baby sleeps and wakes at regular intervals • At the end of 6 months, the baby is around 12 inches long and weighs about 0.68-0.9 kg. • During the seventh month the baby constantly kicks and stretches its body. • During the eight month lungs may still not be completely developed. • During the ninth month the baby usually drops into a head-down position and rests lower in your abdomen.