What is pregnant without vomiting?

Pregnant women in early pregnancy, vomiting or not vomiting are normal performance, symptoms of morning sickness show the reason, is due to the body's chorionic gonadotropin levels increased, estrogen, progesterone levels increased, and caused by a clinical symptom, due to the degree and speed of these relaxed levels increased, pregnant women to these hormones metabolic capacity and sensitivity are different, resulting in early pregnancy reaction is not exactly the same. Although a lot of pregnant women in pregnancy 40 days or so, will show obvious symptoms of morning sickness, but there are also some pregnant women for these hormone rise lack of sensitivity, do not show obvious symptoms of morning sickness, but also completely normal, this time pregnant women do not worry too much, can go to the hospital, do blood HCG test and ultrasound examination, as long as the normal level of examination, embryo development is normal has nothing to do with it.