I'm a bit like that too, I don't mind going out say, for a walk on the beach but ask me if I want to go out socialising with a group of people and I'd much rather be on my couch with my dog!
I have no interest in a baby shower and don't think anyone is seriously planning me one. A couple of friends mentioned it but only in passing and I said not to bother so I don't think we're doing anything, which is fine by me.
My vertigo disappeared yesterday but came back a bit in the night, I have worked out that if I sleep on my right hand side, it starts up but if I sleep on my left it doesn't. Which is great - can't sleep on front for bump, back for vena cava/comfort and now the right side for vertigo. My left side is feeling rather squashed!
I walked to the chemist yesterday to get my vertigo tablets just in case, had to walk fast to get there before closing, and I've triggered the SPD off again! So now I'm back to doing my pregnant lady waddle.
The good thing is, at least I'm not working with these irritating afflictions, so it doesn't impact too much on me.