Fetus: A missed period is usually the first sign of pregnancy or conception, but if not other changes will soon occur. You may experience shortness of breath, sore breasts, fatigue, nausea and even frequent urination. At this point, you may need a pregnancy test to be sure and if this is in the affirmative, you may need to understand what’s going on within you in this likely journey of 9 months in your fetus.
Now that your pregnancy is an all clear, you can relate to some of these symptoms, some of which you are already experiencing:
Apparent weight gain or even loss
Here’s a sneak peak of what’s happening to the fetus, growing inside of you
Your baby or fetus has begun developing its nervous system, heart, arm and leg. This typically occurs in the first month .
Next is the formation of the sex and major organs . Its heart will begin to beat and the umbilical cord, traceable. Your fetus will also grow longer arms and legs and its fingers and toes have begun to form. Its facial features will also develop. This is around the 8th week.
By the 12th week, your baby’s head growth will be slower and your baby would be about 3 inches long, and weigh an ounce or less. Your fetus nerves and muscles have begun working together and the baby can even make a fist. The sex organs are now apparent and you can tell if your fetus is a baby boy or girl. Your baby’s eyelids will close to protect its developing eyes and will only open again by the 28th week.
By the 16th month, your baby has begun developing meconium in its intestinal tract. This is typically your baby’s first bowel movement. There will be skin and musculoskeletal system formation. Your baby will gain sucking reflexes within the mouth and would have grown about 4 to 5 inches long, weighing almost 3 ounces.
By week 20, your baby is about 6 inches long, weighing a likely 9 ounces. It is now fully active and you will feel occasional kicks and reasonable movements. Its eyebrows, eyelashes, fingernails, and toenails have now formed and it can hear and swallow. Your baby can even scratch itself. At this stage, your baby is covered in feathery hair called lanugo and a waxy protective called vernix for its protection.
By your 24th week, your baby would have recorded hair growth on its head. Baby’s testicles will begin to descend into the scrotum if it’s a boy and if it’s a girl; her uterus and ovaries would have been formed with full supply of eggs in the ovaries. The baby’s bone marrow begins to make blood cells. It will form a taste bud as well as a sleep routine, footprints and fingerprints. The lungs will be formed, but not yet functional and it will store fat.
By the 32nd to the 36th week, your baby’s bones are fully formed, though soft and its body’s fat would have considerably increased. It would be from 15- 17 inches to about 16-18 inches long and may weigh more than 6 pounds. Movements and kicking have increased and will decrease afterwards and it can close and open its eyes. Lungs are not completely formed at this point but there will be practice breathing. The waxy protective coating on its body will thicken and its fine hair will begin to fall off.
By the end your of 37th-40th week, you have now launched into full term as your baby now weighs between 6 pounds to 9 pounds, with a length of about 19 to 21 inches. At this point, your baby’s organs have all developed and are fully functional. There is a likelihood that your baby will get into a head down position, readying itself for delivery.