Am 39+4 with DS2, absolutely massive and desperate to get him out!! So much so I convinced poor DH to dtd last night 
Woke up at 5am feeling very queasy, almost like a nervous feeling. Went to the loo and it wasn't very pleasant (sorry, TMI I know!) then promptly threw up. Had some toast and water to try and settle my stomach but brought that back up too.
I've had some 'tightenings' as well as another show this morning too.
I generally feel yuk! Could this be the start of things or am I clutching at straws? I didn't go into labour naturally with DS1 so this is all a bit new to me.