Hi queenbee,
I seem to be stalking your threads lol, we seem to be going through the exact same things!
We've started co-sleeping with DS as well, as he would not settle in his cot, now it seems as though he tosses and turns all night long and can't get comfortable, which means we don't get comfortable either!
I have no answers for you either (I wish I did!) but just wanted to give you a big hug and hope it gets better for you soon.
xxx