What does it mean if there is no yolk sac on a six week ultrasound?

Answer by  proudmom (11)

It's quite possible that your ultrasound was performed too early. Usually, the yolk sac and heartbeat appear around 5 1/2 to 6 1/2 weeks, so if one isn't found on the first ultrasound, a repeat ultrasound should be performed 7-10 days after. It's very common for conception dates to be a few days off. Talk with your doctor.

Answer by  CopingWithLife (264)

It could mean that the baby is just not big enough to be seen on an ultrasound. Generally, the doctor should bring you back for a follow in 1-2 weeks.

Answer by  Rose (6804)

At six weeks a yolk sac should be present in an ultrasound. It could be that your pregnancy is not as far as you thought it was. Without a yolk sac it is not a viable pregnancy.

Answer by  dubhreubel (501)

while it is possible that at 6 weeks gestation no yolk sac could mean you are miscarrying, it is far more likely that you estimated gestation is incorrect, you could in fact be less pregnant than you think you are. The yolk sac is usually visible around 5. 5 weeks gestation.

Answer by  Ali41 (1593)

It could mean one of two things. First, it could mean that you date of the pregnancy is wrong, e. g. you are a late implanter and the baby is not as far developed as you thought. It could also mean that the embyro is not growing properly and may not be thriving.