Pregnant, afraid of ectopic pregnancy, did b ultrasound, no pregnancy sac found outside the uterus

In the case of pregnancy, B-ultrasound examination did not find the gestational sac, it may be ectopic pregnancy, there may be because the pregnancy time is still short, the gestational sac is not fully developed. In this case, we can wait a week or so, and then go to the hospital to check again to determine the gestational sac position.