If you have reached week 12, it means you are in the final week of your first trimester and your little angel will be nearly 6 cm in length and fully formed. Your baby would have changed beyond all recognition from the first week.
The next stage of development for the baby is to grow larger and practise breathing and sucking motions. It’s possible that you’ll be able to see your baby for the first time this week during your scan, though it’s dubious that you will be able to get a solid sexing just yet.
The baby will be moving around a lot when it reaches this stage, and you still won’t be able to experience this for a while since they still have a number of areas to bob about in. Their eyelids of the baby will remain fused shut even in the twelfth week. The eyelids will open only at about the 27th week, and they will have moved to their final spot on the front of the head instead of the side. On the other hand, their small wrists and elbows start to bend as they move around.
When you are twelve weeks pregnant, your baby’s skeleton will be currently made of cartilage, just like the one you’d find in your nose or ear, but this will harden into bone in the weeks to come. When your infant is born, their skeleton is made up of above 300 parts of bone and cartilage, but they will perhaps have 206 as an adult, as bones join together to form bigger and stronger bones.
Other than a developing skeleton, your baby’s intestines and organs will be changing in this twelfth week. The kidneys will work to eliminate urine into the bladder of your baby, while their intestines, which grow so fast at the start that they project into the umbilical cord, are moving back into the abdominal cavity.
Finally, this is the week when your baby starts to practice their reflexes. The reflexes include clenching eye muscles, curling of fingers and toes and making sucking actions with their mouth. You might not actually feel the movement of the baby. But when you poke your stomach you may feel the baby wriggling.
One of the vital development that happens this week is the reflexes. The fingers of your baby will soon start to open and close, the toes will start to curl, the eye muscles will clench, and its mouth will also make sucking actions. Moreover, if you just give a poke on the abdomen, your baby will wiggle in response.
The kidneys of the baby will start excreting urine into its bladder.In the meantime, the nerve cells are increasing rapidly, and synapses are developing furiously in the baby’s brain. Its face will start to look like a human. His eyes would have moved from the sides towards the front of his head, and his ears would have also taken the correct position. From crown to bottom, your baby will be just above 2 inches long, which is nearly the size of a lemon and would weigh half an ounce.
Your baby will be approximately three inches long now which is about the size of a passion fruit. The toenails, fingernails and bones are growing, and a fine layer of hair covers the body of the baby.
Baby’s Length: The length of the baby will be around 2.13 inches.
Baby’s Weight: It will weigh 0.49 oz.
Ear: The ears of the baby are closer to their final positions towards the sides of her head.
Eyelid: The baby eyelids will be less transparent now, and its eyes would have moved nearer together.
Umbilical cord: The intestine of your baby which have developed so quickly that they project into the umbilical cord, will begin to go back into her abdominal cavity now.
Uterus: The top of your uterus (fundus) is beginning to increase above your pelvic bones now; you may have found that your waist is thickening.
Your uterus has developed to where your healthcare provider can now feel the top of it, which is the fundus, low in the abdomen, just above the pubic bone. You may have already started wearing maternity clothes, particularly if this isn’t your first pregnancy. Even if you’re not all set for a new wardrobe, you’ve no doubt found that your waistline is thickening and that you’re more relaxed wearing those loose, less restrictive clothes.
You may start to feel heartburn, which is also known as acid indigestion. It is a burning sensation that generally extends from below your breastbone to the lower throat.
During pregnancy, the placenta generates a lot of the hormone called as progesterone, which relaxes the valve that divides the oesophagus from the stomach. Especially when you’re lying down, the gastric acid can seep back up the pipe, which causes the uncomfortable burning sensation. For many women, heartburn doesn’t start (or get worse) till later in pregnancy, when your developing uterus begins to push up on your abdomen. The discomfort may range from mildly annoying to intense and distracting.