Pregnancy Calendar is a way to follow the development of your baby from conception to birth.
Week one starts with first day of your menstrual cycle. In this period, conception does not occur, but your uterus is getting prepared for fertilization.
In week two of your pregnancy calendar, your uterus is abundant with blood tissue and your eggs are maturing in one of ovaries and getting ready to release one. From the day of your menstrual period, around fourteen to sixteen days, ovulation takes place (for 28-day menstrual cycle period).
During week three of your pregnancy calendar, sperm penetrates the egg in the fallopian tube. Although many sperms meet the egg, only one sperm enters your ovum and fertilization takes place.
In the fourth week, after the blastocyte enters within the uterus, it will settle in one spot of your uterus. Now, these cells split into two groups; one that forms the placenta and the other that forms the baby.
In the fifth week, the embryo develops in layers, ectoderm (outer layer), mesoderm (middle layer), and endoderm (inner layer).
Progressing into sixth week of your pregnancy calendar, your baby is 1/17 of an inch long. This is the rapid growing week. In this week, your baby starts to have heart beating and the arms and legs will be formed along with some other organs.
During this week, there are chances of miscarriage. In this week, you will have symptoms of pregnancy, such as morning sickness, nausea, etc.
In the seventh week, development of arms and legs continue. The size of your baby is 1/3 of inch. The other organs like brain, intestine, nostrils, lenses will also grow.
In the eighth week, your baby will start to have fluttering heartbeat, fingers start to develop, leg buds starts to show feet, face appears to change with ears, eyes, and tip of nose, and the intestine start to develop.
When you are 3 months pregnant, almost all organs will develop. In the eleventh week, the baby is called as fetus. In this week, the baby is about two inches. Fingers and toes will be separated and hair starts to grow. Peristalsis and contractions take place in intestine.
In the fourth month of pregnancy calendar, the baby starts to practice inhalation and exhalation. In this sixteenth week, baby’s sex can be identified.
In the fifth month, vernix starts to develop to protect the skin of your baby from amniotic fluid. The baby reaches nearly a pound.
In the sixth month of pregnancy calendar, spine starts to develop, lungs begin to secrete, and the baby can open eyelids. The baby weighs around 2 pounds.
In the seventh month, the eyes are completely formed and hair grows. The baby can recognize your voice. Reproductive organs will also be formed.
The baby weighs four pounds in the eighth month. Fat continues to accumulate. The baby develops immunities to fight against infections. Almost all organs develop during this month.
During the ninth month, the vernix disappears and baby cannot move. Now, your baby is about to deliver. By following pregnancy calendar, you can able to know baby’s growth.