While pregnancy is a lovely time for expectant mothers, with hormones changing daily for nine months, one day can be very different from the next emotionally and physically.

Pregnancy is a nine-month adventure that a woman must undertake. The body is going through evident physical changes during this time, but it is also going through chemical changes. Hormonal changes prepare the body not just to carry but also to deliver a baby. While these changes are normal and expected during pregnancy, hormones may wreak havoc on a mother-to-emotional be's and physical well-being, making each stage of pregnancy unique. This puts an expectant mother in a state of uncertainty about how she will feel not only weekly, but also daily.

Here's how your hormones changes during pregnancy and what you should expect.

Estrogen
Estrogen is one of the primary hormones that help a woman get pregnant, according to Healthline. While a woman begins producing estrogen in her teens and continues to do so until she reaches menopause, estrogen levels rise dramatically during pregnancy to help the "fetus thrive and mature," according to the magazine.

Rapidly growing oestrogen levels are to blame during the first trimester when a pregnant woman experiences morning sickness. However, while oestrogen levels continue to rise in the second trimester after the jump in the first, they are not increasing at the same rate as they were the previous 12 weeks. As a result, energy levels increase. This isn't to say that oestrogen isn't still at work. Breast pain occurs during the second trimester as the milk ducts prepare for breastfeeding, according to the Pregnancy Week By Week Calendar.

According to westendmamas.ca, oestrogen levels are at their maximum point during pregnancy by the third trimester. According to the journal, increased levels of oestrogen are to blame for water retention and oedema, but they also produce the "pregnancy glow."

HCG
The Human Chorionic Gonadotropin hormone is used in pregnancy tests to identify whether or not a woman is pregnant. The hormone may not be able to determine if a woman is pregnant or not the earlier she is in her first trimester. The hCG hormone doubles every two days, according to Hormone Health Network, which is why testing for pregnancy should not be done until a woman is suspected of being at least six weeks pregnant.

Until the umbilical cord is fully grown, the levels of hCG will double every few days. According to the publication, once this happens, the hormone's levels will start to drop. The hormone's job after that is to help with progesterone production, which will continue until the very end of the pregnancy.

Progesterone
Progesterone is the other important hormone that aids in the preparation of the body for pregnancy.

Progesterone, as expected, increases the growth of the uterine lining, allowing conception to take place.

The progesterone hormone kicks in after the egg is implanted, preparing the body to deliver the baby. Progesterone loosens joints and ligaments during the second and third trimesters to provide room for the baby to be delivered. Unfortunately, this relaxation of body parts also affects the digestive system, which can lead to not only heartburn and acid reflux, but also constipation, according to the study.

Oxytocin
Oxytocin levels do not grow considerably during pregnancy, unlike other hormones. Instead, according to Parents, hormone levels rise considerably during labour and delivery. This is what causes the uterus to grow for the baby to be born when it's time to give birth.

According to Health Foundations, when the mother smells and sees her infant for the first time after the baby is delivered, a big amount of oxytocin is rushed to the brain. The enormous amount of oxytocin released at this precise moment is what helps a mother and her infant form a deep relationship.

Prolactin
Prolactin is a crucial hormone throughout pregnancy, but it doesn't kick in until the third trimester, when it prepares the body for lactation, according to Today's Parent. Prolactin is "10 times its typical levels" during the third trimester, according to the journal. These levels aid in the production of colostrum, which provides essential antibodies to the infant as he breastfeeds for the first time.

Relaxin
According to what to expect, the relaxin hormone is present in a woman's body at quite high levels during her monthly cycles. The hormone's purpose is to thicken the uterine membrane in preparation for conception. If an egg is not embedded, the uterine lining is shed, resulting in a period and a return to normal relaxin levels in the body.

According to You and Your Hormones, relaxin levels will be at their maximum during the first trimester if conception happens. This is to guarantee that implantation to the uterine wall is robust, as well as to aid in the development of the umbilical cord using hCG.

According to the publication, relaxin is best recognised for relaxing ligaments during the latter stages of pregnancy. The hormone softens the cervix, allowing the birthing process to begin. It also relaxes the ligaments in the pelvic, making it easier for the baby to enter through the birth canal.

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