Thanks, CedarS. I'd rather not go into specifics because it'll probably make me feel worse again (I'm feeling a bit better now, luckily), but I have a bit of a problem with reading things that trigger me, and I've gone and done it again.

(In my defence, I didn't know what it was going to be about when I clicked on the link...but I could have stopped when I found out...

)
"Just do something else" is a good idea, especially since it's quite late here - think I'm going to try and sleep soon. Hopefully things will go back to normal in the morning.