Pregnancy Symptoms and Signs

Although nausea and vomiting will lose its charge when the pregnancy enters the second trimester, but the nausea and vomiting should alert. Nausea and vomiting can cause a lack of good nutrition on pregnant women and the fetus uterus. First trimester is a critical period in which the fetus is in the first stage of the formation of the body organs. If the fetus has a certain nutrition deficiency, the formation of a perfect organ can fail. In addition, the fetus at risk also was born with low birth weight.