The reasons for not seeing the embryo at 7 weeks of pregnancy may be that the pregnancy is relatively late, and there is also the possibility of fetal arrest, and then there is the possibility of ectopic pregnancy, the gestational sac is in other locations.
1. Late pregnancy: the pregnant woman herself has irregular menstruation, although the menstrual period has stopped for seven weeks, but the pregnancy is not yet seven weeks, the pregnant embryo has not yet entered the uterine cavity.
2. Fetal arrest: under normal circumstances, seven weeks pregnant when you can see the fetal heart bud yolk sac, need to further ultrasound examination, HCG examination, if the gestational sac shrinkage, HCG decline, diagnosis of fetal arrest need to be timely surgical treatment of uterus clearance.
3. Ectopic pregnancy: 7 weeks pregnant without seeing the embryo, including if you can not see the gestational sac, you need to ultrasound further examination to diagnose the location of the gestational sac, once diagnosed with ectopic pregnancy need to be hospitalized in a timely manner for conservative treatment or surgical treatment, to avoid life-threatening.
7 weeks pregnant without seeing the embryo need to go to the hospital as soon as possible for further consultation, by the doctor according to the specific conditions, to develop individualized diagnostic and treatment programs, so as not to delay the condition.