boddess - Welcome to you, and yes to your Q's. It doesn't really happen as much now, but when I was at five weeks I was like a crazy person with my mood swings. One minute I was sobbing my heart out, and the next I was in hysterics walking my feet across the wall. My DH asked me "er...what's so funny" and all I could do was say "Monster feet!!!" before collapsing into laughter again.
As I said, thankfully this has stopped now....
How are people doing on the nausea front? I've been retching every morning as soon as I get up, as I can't stand the musty smell of the house (our flat is very old). Thankfully it's before eating, so it's not too vile. I'm going to ask DH to start opening the windows when he gets up.
Some days I feel much worse than others. Yesterday I pretty much spent the whole day on the sofa feeling sorry for myself. When I did go to the shops I felt like I was going to pass out.
Today I even managed to do an exercise video!!!