How to take care of pregnant women during their 12th week of pregnancy

　　1. Embryonic development at 3 months of pregnancy

　　The third trimester of pregnancy is the 9th to 12th week from the last menstrual period and is the last month of the first trimester.

　　Regarding the development of the embryo, we still look at it week by week.

　　1. 9th week of pregnancy

　　Day 1 of the 9th week, which is the 43rd day after conception. On this day, fetus The cartilage, bones, gonads, knees and ankles begin to form and develop. The formation of gonads takes one or two weeks to complete. At this time, if you use hormone drugs, excessive soy products, and eat some cultured meat with high hormone content, it will affect boy Or the development of girls.

　　On the 2nd day of the 9th week, the semicircular canals of the inner ear and the inner eyelids begin to form.； On the 3rd day, the development of nipples and elbows is clearly identifiable. From this day on, the fetus develops due to the brain and small muscles and nerve The connection function between the fetus and the fetus is enhanced, and spontaneous movements begin to occur. However, since the fetus is only 15mm in size, the expectant mother cannot feel his movements at all.； On the 4th day, the fetal nostrils, nose tips and toe lines begin to form; the critical period of fetal leg development ends here, and the remaining time is the turn of the detailed toes, joints and toenails. ； On day 5, the fetus’s double eyelids have formed. Eye All structural development is basically completed, and the trunk begins to lengthen and straighten.； On the 6th day, the tongue and fingers begin to develop, the intestinal cavity begins to move from the umbilical cord into the body cavity, and the outer ears are gradually placed at the lower part of the head. At this time, the eyes are still located on both sides of the head like rabbit eyes. In the future, the eyes will also move forward as the head grows. The size of the fetus on this day is about 17mm. ； On the last day of the 9th week, the fingers have appeared, and there are dimples between the fingers like ducks and geese. The arms have begun to lengthen, and the elbows have begun to bend, but the arms are actually still very small now, only the size of a normal five-point Arabic numeral 1 on a 17-inch computer screen.

　　In the 9th week, not only the organs of the body continue to regenerate, but also some organs disappear. The small tail originally possessed by the embryo has mostly disappeared in the second half of the 9th week. We have said that the development of human embryos repeats the history of ancestral evolution. You can see that the embryo changes from a single cell to a multi-cell in the 3rd week, and from a cell cluster in the 4th week. In the 6th week, we move from molluscs to vertebrates. In the 7th week, vertebrates are divided into egg-laying and viviparous. In the 8th week, viviparous mammals are divided into embryos of cattle, sheep, pigs, and dogs, and primate embryos. At the end of the 9th week and the beginning of the 10th week, human embryos are distinguished from other primates such as monkeys and gorillas.

　　In the 9th week, the fetus's limbs are growing, and its arms can already cross over the heart area.； The legs are getting longer, and the feet have grown enough to cross in front of the body; the fetus can also move this week. Moreover, with the development of brain nerves, the expectant mother's emotions affect the baby through hormones and active substances. The changes in the fetus are closely related to the expectant mother's emotions. Expectant parents need to pay more attention to prenatal education and self-cultivation.

　　Nowadays, everyone pays attention to health care during pregnancy. In order to cater to the needs of expectant parents, there are a lot of popular science books and visual books on the market. Before the lecture, I searched for health care on the Internet. I was shocked. I only excerpted 2 statements about the 9th week of pregnancy:

　　1. Now you need to drink lots of water with trace amounts of fluoride so you will get enough fluoride……；

　　2. If there are teeth that must be extracted, it should be done between 3 and 7 weeks of pregnancy to avoid miscarriage and complications. premature birth；

　　The original text is like this, and there is no twist in the context. I didn't take it out of context. You can search it online.

　　Very scary, I wonder if this was written by a doctor? Because this is a completely wrong statement, guidance is much more harmful than no guidance!

　　Whether to supplement fluoride can only be done in areas with relatively low fluoride content. Most areas in China, such as Northeast China, Inner Mongolia, Ningxia, Shaanxi, Shanxi, Gansu, Hebei, Shandong, Guizhou, Fujian, etc., are high-fluoride areas. Not only cannot supplement fluoride, but also drink more pure water to reduce fluoride emissions. Taking a step back, even in fluoride-deficient areas, do you need to supplement fluoride in large amounts? How much is a large amount?

　　For pregnant women, tooth extraction and fillings, if not done before pregnancy, should be done during the second trimester of pregnancy when the pregnancy is stable, that is, from April to July. This is something that ordinary expectant mothers should know. common sense Ah, I really don’t know that such a fallacy started from that website in the first place. If it was edited by a doctor, this doctor is really guilty. Even if it is an online editor who does not understand medicine, or even an editor who reprints it, please use your brain, because the error is too straightforward and obvious.