4 weeks of pregnancy may seem like nothing is going on and it may begin to wonder whether if one is pregnant?? The blastocyst has concluded its journey from the fallopian tube to the uterus.

Irrespective of the level of surety in the last 3 weeks of the pregnancy, when it is 4 weeks pregnant, it becomes so glaring to the that some major changes have taken place. The signs noticed by now include vomiting, nausea, absence menstrual periods and a few others.

By this time of 4 weeks pregnant, the blastocyst is expected to have made its journey from the fallopian tube into its new resident and permanent place of abode known as the uterus until delivery. Once the blastocyst is in the uterus, it burrows into the uterine lining and implants. This is the mark of the unbreakable connection that will last for the next eight months and the lifetime after that. And the moment the embryo settles in the uterus, it will then go through a great moment of divide whereby it will split into two groups.

While the first half of the embryo will form what will be called as baby, the other half will become the placenta. The placenta is called baby’s lifeline. It is that special tissue that will be delivering the nutrients that the baby must have and the oxygen it needs to keep alive throughout the process of the entire pregnancy stage.

Another important function that the placenta will perform is that it will take care of the wastes from the baby. This means that it will carry the waste away to where it will be delivered for a push out.

And as for the other embryo forming into the real baby, it will begin to create the neural tube that the brain of the baby as well as the spinal cord and the backbone will form eventually. But then, there are other cells that will come in later to form other parts of the baby like the skin, muscles and a host of others. The cells responsible for these developments in the baby are grouped into three and they are the ectoderm, mesoderm and the endoderm. While the ectoderm (i.e. outer layer) will take care of the formation of the hair, eyes, skin, brain and the nervous system of the baby; the mesoderm (middle layer) will make up the muscles, kidneys, tissues, blood system and the skeleton of the baby; and the endoderm (inner layer) will end up as the internal organs of the baby.

At 4 weeks which is just approximately one month, the body is still gearing up. Some women experience the pesky PMS-like early pregnancy symptoms like mood swings and cramping while other women may not feel a thing. At 4 weeks which is just approximately one month, your body is still gearing up. Some women experience the pesky PMS-like early pregnancy symptoms like mood swings and cramping while other women may not feel a thing.

In addition, it is likely that the belly will bloat a little or it may not even appear as pregnant yet. Then, there is the possibility that the body will be producing HCG (Human Chorionic Gonadotropin) which may begin to feel some nausea, or morning sicknesses like light-headedness, fainting, exhaustion, and mood swings.

More so, it may be discovered that the breasts are becoming tender and that the nipples are also becoming more sensitive. The senses of smell and taste also becomes extra sensitive. Spotting during this week can also noticed. The spotting may begin right around the time that one would have had the period or even earlier. It should not be a cause of alarm. The spotting or light bleeding is usually a sign that the embryo has implanted itself into the uterine wall, which is a good thing. It is only 25% of women who experience implantation bleeding. For women who experience implantation bleeding, it can be accompanied by symptoms like mild cramping, a woozy feeling, swollen breasts, and a headache. Implantation bleeding can often occur before the one is positive for a pregnancy test so it can be hard to tell whether the light bleeding is an early sign of pregnancy or just normal spotting leading to the period.