From your list sounds like your doing great, especially the everything smells bad!
Best of luck for your scan, I'm sure you'll be fine, I know how paranoid you can be after previous misscarrige......I was second guessing my body this whole pregnancy and still find it hard to believe that I've finally made it to the 30 week mark. The heartbeat at 6 weeks is a sign that bubs is going strong and I'll keep my fingers crossed that everything is going fine!

Snoopea