Nina I had the *exact* same thing happen with this pg - the few days leading up to 6 weeks I started to have a bad feeling and symptoms eased off for a while. The same thing I'd had happen with both losses. That's why I was so sure we'd see a non-viable pregnancy on the ultrasound at 6w4d, but lo and behold we had a healthy heartbeat this time. So you just never know. My symptoms picked back up a lot at 7 weeks, I think that is a somewhat typical hormonal fluctuation pattern....
Welcome Lisa! It's a really fine line between paranoia and gut instinct, isn't it? Hang in there!
I understand what some of you are saying about being highly monitored, sometimes it is better to just go with the flow and not worry about what you don't know. But as someone who's had two different "missed" miscarriages I personally feel much better knowing. Going around thinking I was still pregnant for 3 weeks when I wasn't was the worst part of my first loss. If I'd had an ultrasound when I wanted to and known right away, I could have processed it and dealt with it much better than I did. It was impossible to trust my body and instincts after that experience. With my second loss, as excruciating as it was to wait out 3 weeks to miscarry naturally, I was able to fully process and grieve and in the end was glad to have known. I came out of it much healthier. But that's just me, just another perspective....I think which ever is going to allow you to relax the most - knowing or not knowing - is the right path for you obviously.
Kami I can't see a thing personally but who in the world knows on these early blurry u/s! I've certainly heard of twins not being spotted that early because they're still so tiny it's easy to "hide", especially if the doc isn't looking for them!