When to go for a checkup and a clinical pregnancy test
It’s best to go for a prenatal checkup as soon as you suspect a pregnancy. This is necessary to ensure that the mother and fetus can get the appropriate exams and diagnostics. These tests aim to confirm that the fertilized egg has implanted itself properly.
During the initial prenatal visit, physicians can perform other clinical tests to confirm the pregnancy, such as a sonographic evaluation of the pregnancy (transvaginal ultrasound) and blood tests.
First month of pregnancy
After implantation, the first week of pregnancy begins. As a result, limb buds (structures that will eventually become the arms and legs), as well as the eyes and ears, begin to form. As times goes on, the heart develops a regular rhythm (around week 4) and the brain begins to develop. Simultaneously, the tissues that will turn into the vertebrae and bones start to appear.
Second month of pregnancy
As the fetus’ brain continues its development, some electrical activity begins in the nervous system. Meanwhile, the arms and legs grow longer, and fingers and toes begin their form. Likewise, the eyes, upper lip, nose and ears become visible, while the lungs start to develop. The neck and trunk of the fetus also become more defined.
Third month of pregnancy
During this time, the fingers and toes are distinct and have nails, while the fetus’ face gains more definition. Meanwhile, the fetus can now swallow and its heartbeat becomes detectable with a machine. The kidneys also begin making urine while the bone marrow forms blood cells.