Hey Bluetree,
I know what you mean about anxiety- and yep nights are the worst!
You can definitely have ultrasounds this early and you can decect a heartbeat from very early on. The downside is that I think you have to pay for them yourself unless you have something going on- bleeding ect.
My first was at 6 1/2 weeks (heartbeat detected/ not easy for me to see )and cost $170 of which some is claimable on Medicare. My second @ 8 1/2 weeks showed a much bigger 'blob' with a heartbeat visible(flickering) on the screen.This was a quick one performed by my ob after I had some spotting.
I thought most hospitals do one @ 12 weeks so you can have the nuchal translucancy test for Downs Syndrome?
Im sure everything is fine...Try not to stress too much- easier said than done I know!
Take Care