Month 1

Does that at-home-pregnancy test show double yellow lines? Congratulations, you’re pregnant!

The prenatal development in the first month of your pregnancy starts from fertilization, a process where the sperm combines with the ovum in one of the fallopian tubes to form a new egg called zygote.

After fertilization, the new egg descents from the fallopian tubes to the uterus.

Simultaneously, it divides and forms a cluster of cells where the cells separate into three layers: the ectoderm, the mesoderm, and the endoderm.

The inner group of cells forms the embryo and the outer group of cells forms the membranes, which nourish and protects it.

The placenta also starts forming to carry nutritive substances to the baby as well as to eliminate the wastes all through the pregnancy. Even the amniotic sac starts forming which surrounds and protects the developing embryo.

Also, the nervous system starts developing. At this stage, the embryo will be one-fourth inch long.

Here’s what to expect during weeks one through four.