Hi Ladies! Can anyone tell me the difference between a transvaginal ultrasound and a fetal viability scan? I went to my OB today (I should be 6 weeks 2 days along) and I am really worried. I have a healthy 16 year old but in 2005 I had a blighted ovum. That was a horror story, as after they did the removal I had a SECOND D&C within 4 days where the doctor said he was removing "fetal matter". Well - if there was no fetus to begin with, there shouldn't have been an emergency 4 days later right? Anyway - I went for my 1st checkup as I am very high risk. Doc saw the sac but said it is much to early to see a fetus and is sending me for a viability scan. What on earth is the difference? I can't seem to find anything online at all and am freaking out at seeing an empty sac again. I did just have surgery in mid April and I thought my LMP was 4/20 but it may have been 4/24 which puts me just a few days behind. I also know with those dates I conceived on 5/4 or 5/8 and I know that it can actually take a few days after to truly conceive so I may have had implantation on says 5/6 or 5/7 or of 5/8 was the day it could have been 5/9 or 5/10. So.. Please let me know if you know the difference between a trans-vag us and a viability scan. Thank you SO much!