39 weeks: Oh my goodness, why can't I stop this insane nesting?

I've been nesting for a week now, and my body is so tired, but I can't stop! I just tell myself I'll just do one thing and before I know it I'm scrubbing out the bottom of the sink cabinet, dishwasher, and cleaning the dog's bedding and toys.... Everyone tells me I should be resting, but I can't stop nesting! I go to bed at night and my body aches, and I want to stop but it is just like a compulsion of some sort. Is this normal!?!?