MY DH and I are co-sleeping with our 12-day old son... and all is bliss, except, well, daddy gets too blissed out! He's an incredibly heavy sleeper (We're both firefighters/EMT and he can sleep through the pager going off!), and worried that he's going to hurt the baby. I'm a bit worried, too-- I woke up the other night and he had just about rolled on DS (!), and he doesn't have that "body awareness" that seems to come so easily to me with the babe in the bed.
For now, we're using a pillow to sort of define "safe space", with DH on one side, and DS and I on the other (we're lucky enough to have a king size bed). I'm worried, though, that as DS becomes mobile, the pillow is no longer a safe option-- it seems every book I've read says "NO PILLOWS". (Although I question how realistic that is for me, but that's another thread alltogether..)
Wondering if any other mammas out there have dealt with the same thing... we LOVE having our son in bed with us. We do have a co-sleeper, but it seems to work better as pillow storage right now. (I don't like that it is lower than the mattress, and I can't look across at DS).