I had my first u/s today. There was one, beautiful sac in there. I am 5w6d today. Even though though told me not to expect to see anything other than a sac this early, I still had the slightest hope that I would see a little more. Now I've freaked myself out asking Dr. Google about empty sacs and I'm even more worried waiting for my next u/s next Friday. RE didn't seemed concerned at all and told me there was absolutely nothing to worry about. Someone please talk me down and tell me you had a similar experience and everything was ok! Here's a couple of pictures from today.