Sleeping on a Rock

I think I'd just about rather sleep on the floor by now. We've needed a new mattress for years and it's finally to the point where I can hardly stay asleep without waking up in pain. Then the whole day my back, neck or something else is sore and cramped from it too. I'm sure having a kid and a cat pushing me off doesn't help and I can't get rid of them either! I think we just need a way bigger mattress so everyone has some kind of room. *sigh*