Hello
I have not experienced exactly what you describe but my recent experience will hopefully help you to not think the worst just yet.
I went for an ealy scan because my last pregnancy ended in a mmc. I know when I ovulated as I was charting, so all I expected to see was a 6 weekish beanie. Now, that is what we did see, but because generally they decide how far along they think you should be by the lmp, they were expecting me to be 7 weeks. (I actually ovulated around day 20, not 14 as they presume.) Anyway,they were concerned because although I saw my bean measured right for when I was, my gestational sac is rather big. Big enough for them to think that my baby is behind and possibly not normal. What I am trying to say in my over wordy way is that had I gone for that scan say a week earlier, there would have been no beanie visible (it was only 5mm crl at bang on 6 weeks) all they would have seen was my sac, and considering that my sac is randomly a saczilla, that would have made them think blighted ovum.
I am not here to offer false hope I know you have to employ whatever coping mechanism you have, just incase you do get bad news. I just wanted to say that sometimes a sac is simply bigger than 'normal' ie: what the medical world consider as normal. The lady who did my scan actually had trouble finding the beanie as it is tucked up right near my lining but once she found it she found the HB too. I just have a massive sac! I hope that you do too! I googled large sac and there is nothing wrong with having a large sac when the bean is visible, but when the bean is visible to the sonographer depends on how good they are, how good their machine is, how long they look before they decide its not there, and especially variations in ovulation and implantation, and whether or not you have a tilted uterus. Please try not to sorry yourself too much at this early stage.
