Yolk sac, No baby?

I am pregnant at 13 wks. got u/s no baby just sac, should i be concerned?

[babyscience]

What did you doctor say?  Are you 100% positive you have the date of conception right.  If you are sure, it doesnt look to good.  But anything could happen, so maybe it is really late on developing or your dates are off.  Do you know if the sac was measuring at 13wks?

[kris123]

Did the dr. metion to you that you may have a blighted ovum.  This is where there is a sac and no baby.  I had an u/s at 9w last June do to spotting adn they measured a small sac 6w6d and there was no baby in the sac.  I waited it out for two weeks and ended up having a m/c.  If your dates aren't work, I would think they would have seen a baby by 13w.  The only way I see that there was a mistake is if you are very early in the pregnancy.  Just remember if it doesn't work out you can still go on to have a heathly pregnancy because I will be having my baby tomorrow.  

[DSYBAHENA]

I KNOW HOW YOU FEEL I WENT THRU THE SAME THING FOUR MONTHS AGO I WAS THREE MONTHS PREGNANT THE DOCTOR SAW A SAC BUT NO BABY IT ENDED UP AS A MISSCARIAGE I WAS BLEEDING THO. HAVE YOU BEEN BLEEDING? NOW IM PREGNANT AGAIN AND IM SPOTTING AGAIN IM SCARED IT MIGHT BE A MISSCARIAGE AGAIN. I HAVET O WAIT TILL THE ULTRASOUND IS DONE.