Anna, Harry and Loose sorry about the headaches, I had them with my DD, they were absolutely horrific
hope you both find something that works for you.
London ladies, sympathies on the tube troubles! I find that stepping foot on the tube seems to turn perfectly normal people into massive wankers. Quite depressing really. I used to live there and still miss it in terms of things to do, etc, but would hate to have to wrangle bump (and latterly kids!) and stuff on the tube all the time. Pros and cons, I guess.
emvy I also get bad scanxiety. Have had too many bad scan experiences not to! I just try and forget about it til it's actually here and that stops me brooding on it too much (although I usually spend the week or so before completely wound up and on edge anyway).
Harry that's the weeniest little bump! Very cute 
I'm just starting to round out slightly round the tummy. Mostly I still just look a bit fat and bloated though (tbh mostly I still am just fat and bloated - I deflate a lot overnight and gradually inflate again through the day!). My boobs are finally sort of catching up with the pregnancy memo - by now they were huge in prev pgs, but I think they're past the point of no return this time!
Re finding out - I did with both my others, but aiming for a surprise this time! Although if it's anything like my DS, we won't have a choice - I went for my 20w scan, she put the doodad on my tummy, and there, instantly, was an unmistakeable little willy - he was hanging out upside down with his legs wide open. Was lucky we'd wanted to find out anyway
will have to keep my eyes shut this time!