How many days is a week pregnant?

Pregnancy week normal refers to menstruation stop 37 days, in this time period after B ultrasound often can not see the pregnancy sac situation, it is recommended that if there is no discomfort in the clinical situation, you can stop menstruation after 45 days to do B ultrasound examination, about 6 weeks of pregnancy, clinical B ultrasound examination will see embryo tissue, about 7 weeks of pregnancy, after B ultrasound examination will see the original cardiac pulsation, so it is recommended that in pregnancy must be checked regularly. If irregular vaginal bleeding or lower abdominal pain occurs after menstruation stops, go to the hospital at any time for an examination, blood tests for HCG and progesterone can be taken, and monitoring should be repeated every other day to initially understand whether intrauterine pregnancy or extrauterine pregnancy. In addition, B-ultrasound should also be used to determine the location of the pregnancy sac.