The gestation month is not calculated according to 30 days, but according to 4 weeks in a month, so 9 weeks of pregnancy is 2 months and 1 week, which is in the early stage of pregnancy. Gestational age is usually calculated from the first day of the last menstrual period, and the whole pregnancy is 280 days, totaling 40 weeks, and it is normal to give birth around 2 weeks after the due date. The first 12 weeks of pregnancy are considered the early stages of pregnancy, when the embryo development is still unstable and caution is needed in both diet and daily life. In the first 3 months of pregnancy, the ovaries secrete progesterone to regulate the environment of the uterine cavity to promote the normal growth and development of the embryo. If the progesterone level drops, it may cause vaginal bleeding and abdominal pain, which may lead to miscarriage, and timely treatment is needed to protect the fetus. Nine weeks pregnant women need to pay attention to maintain emotional stability, avoid excessive anxiety, keep in a happy mood, avoid contact with rays, drugs, chemicals, etc., so as not to lead to deformities, and early pregnancy is best to avoid sexual intercourse, so as not to cause miscarriage.