I was comparing my 8 week scan photos with one of my pregnant friends 8 week scan photos. Her sac is completely shaped and sized different then mine. I was blown away to see how much of a difference it was then mine. After noticing that I got on here and seen that the shape/size of sacs a baby is in varies from woman to woman. I had NO idea about this. Does anyone have an explanation for it because I am so dumbfounded!? Does everyone know this or is this new news to some people or what? I am going to be so embarrassed if everyone has known this and I am just figuring it out!