How many days pregnant can be determined?

If you want to know how many days you are pregnant, whether you are pregnant, this situation suggests that you use morning urine test after half a month of fertilization in the same room. Morning urine test has two bars, that is pregnant. Or ten days after fertilization in the same room to the hospital to take blood hCG, blood hCG value showed a double increase, this situation is also pregnant. After pregnancy to determine whether it is intrauterine pregnancy, or ectopic pregnancy. It is generally recommended that about 25 days after the same room to do a yin ultrasound examination, 25 days after the same room yin ultrasound generally can see the pregnancy sac in the uterus, there are yolk sacs in the sac, if 25 days after the same room does not see the pregnancy sac in the uterus, only the blood hCG value increases, this situation is suspected of ectopic pregnancy.