Nope you're definitely not the only one. That described my time as a SAHM to a tee. Now, however, that I'm working and studying, and DH is primarily caring for Charlie and looking after the house (he's on LS leave) the work/play/rest 'sections' of my day have become a lot more distinct, whereas his has blurred. He said to me last night that he never feels 'off the clock'. I said you're been doing this for 2 weeks, I've done this for years, and you're complaining?

So yes I know what you mean, definitely, Bath. Though as much as I feel saner now, I still kinda miss the chaos.