Is 9 weeks pregnant three months?

Nine weeks of pregnancy is the first week of the third month.

Pregnancy is one week every 7 days and one month every 4 weeks, so 9 weeks of pregnancy is the first week of the third month. Usually the expected date of delivery is calculated from the first day of the last menstruation. The whole pregnancy was 280 days, 10 month, 40 weeks. But in fact, due to the different menstrual cycle of each pregnant woman, the estimated expected date of delivery will be different from the actual expected date of delivery 1-2 weeks, so pregnant women who give birth within 38-42 weeks of pregnancy are called full-term.

After 9 weeks of pregnancy, it can be officially called a fetus. At this time, its length is about 2cm, almost as heavy as grapes. This week, the embryonic tail has disappeared and the body proportion is not very harmonious. The head is very big, accounting for almost most of the body length. Now all the neuromuscular organs of the fetus are working and all the organs are developing. At this time, the eyes of the fetus began to cover the eyes, and the cheeks, jaws and auricles have all developed and formed, and the face is more like a human face.

Arms grow out and intersect in the heart area. The legs are getting longer and longer, and the feet are long enough to cross at the front of the body. Although it is not yet possible to identify the sex of the fetus by B-ultrasound, the reproductive organs of the fetus are already growing. At this time, the fetal skin is transparent. Through the skin, we can clearly see that the fetal liver, ribs and subcutaneous blood vessels are forming, and the liver, heart and stomach are more developed. The placenta also began to develop this week.