If it is your second or third pregnancy, you might know certain things. But when it happens to be your very first one, you will most probably be as confused as you ever were. While your doctor tells you everything, including what medicines to take, what precautions to take, things to do, things to avoid, etc. it may not be enough to fulfil your curiosity about what exactly happens.
The first trimester of your pregnancy (1-3 months) are very crucial for you and your fetus. There are a lot of changes taking place in your body as your baby develops. Here is all you need to know about your first trimester (month-wise) of your pregnancy:
First Month of Pregnancy
An amniotic sac forms around the embryo (fertilized ova which will later grow into a full term fetus). This sac is a protective layer around your baby and cushions them from all forms of mechanical shocks; it also provides a moist environment for the fetus to develop and grow, by the presence of the amniotic fluid inside this sac.
The placenta, a round, flat organ that helps in the transfer of nutrients from the mother to the baby also develops during the first month. It also helps to carry away the waste from the baby to the mother.
A primitive face starts forming; large dark circles for eyes, the mouth, lower jaw and throat start appearing. Blood cells start taking shape while circulation is soon to begin. By the end of the first month of your pregnancy, your baby is the size of a grain of rice (6-7 mm or ¼th of an inch).
Second Month of Pregnancy
The baby’s facial features continue to develop and tiny buds for arms and legs start sprouting out. Small folds of skin develop on the side of their face, which will later form into ears. Fingers, toes and eyes also start developing.
The neural tube, comprising the brain, spinal cord and other nervous tissues of the central nervous system, are well formed. Digestive tract and sensory organs begin to form. Bones start replacing cartilage and the embryo begins to move although the mother cannot feel it as predominantly as she would in the later months.
By the end of the second month of your pregnancy, your baby, now technically a fetus is about an inch long and weighs 9-10 grams (1/3rd of this weight is solely formed of the baby’s head).
Third Month of Pregnancy
By the end of the third month, your baby is fully formed in terms of external features. Your little one has arms, legs, toes, fingers and can also open and close their fists. Ears continue to develop and fingernails and toenails start sprouting. The baby’s teeth start forming; reproductive organs are on their way to development, although it is not quite possible for your doctor to figure out the gender of your fetus.
Your baby’s urinary and circulatory systems are fully functional and their liver produces bile. Your fetus weighs up to 28 grams (1 ounce) and is about 10 cm (4 inches) long.