I did this last time as well, dunno if it's a bit weird, but despite really needing to pick up the phone and catch up with lots of friends, I don't. I don't even know why. I become crap at returning emails and go a bit reclusive. Not completely, because I have a 23 month old, and we have to go places and do things, but when I'm at home, that's it, I don't socialise with anyone in any way.
Is there some sort of biological reason for it, do you think? I remember exactly the same thing happening last time I was pregnant as well - I'm almost 36 weeks and it was probably at the same stage.
I dunno if it's because I'm just so knackered and can't be arsed to have the "yeah, not popped yet, feel like shit, could die of tiredness" conversation with anyone?