This is the hormonal changes of pregnancy

Changes experienced during pregnancy, one of which is the change in hormones. Hormones have an effect peculiar to stimulate and invigorate the body organs work.

Some expenditure is controlled by hormones pitutari gland located at the base of the brain:

hormonal changes in pregnancy
pregnancy hormonal changes
pregnancy hormone changes   
uterus changes in early pregnancy   
hormonal changes after pregnancy
Progesterone

This hormone works to build the uterine lining to hold the placenta, preventing the contraction / shrinkage of uterine muscles so as to avoid premature birth, and breast preparing for breastfeeding.

On the other hand, progesterone will make blood vessels dilate. As a result, the blood pressure to go down, and the mother will feel dizzy. Sometimes cause disturbed digestive system, such as abdominal bloating or constipation, affect mood during pregnancy, as well as increase the body temperature and cause nausea.

Estrogen

These hormones make breasts enlarged nipples and milk stimulate growth, help reinforce the walls of the uterus to cope during labor contractions. Estrogen also will soften the tissues of the body, so that the connective tissue and joints of the body becomes weak. As a result, pregnant women often experience back pain.

HCG

Human Chorionic Gonadotropin is a typical pregnancy hormone, because it is only found in the blood of pregnant women and con. This hormone is formed by the outer tissue layer of the fetus and placenta are formed early in fetal growth (trophoblast). Functions include maintaining yellow tissue formed in the ovaries when the ovaries release eggs recently (corpus luteum), which makes estrogen, progesterone and placental form completely.

Prolactin

This hormone is responsible for the increase in milk-producing cells in the breast. The hormone estrogen after birth will go down, these hormones can inhibit milk production, thus prolactin stimulates milk production.

Oxytocin

This hormone is involved in the process of reproduction in men and women, helping contractions during pregnancy and childbirth, milk production during lactation, the breast feeding activity can accelerate the depreciation of the uterus.

Relaxin

This hormone appears in early pregnancy and the responsibility to help overcome uterine activity and soften the cervix in preparation for childbirth.