I find it very frustrating! I have a whole pile of things I want to do, but I just don't have the endurance and stamina when I'm pregnant. It's so much better for everyone in our family if I just remember to slow down a little and take breaks in between big projects where I can sit and put my feet up. I haven't been so tired that I need naps every day, but I still need time to rest.
Of course once I start something it's very difficult to finish. Do you know the effects of leaving all the toys piled and ready to be sorted only to walk away from it for the day? Absolute mess. Worse mess than before. You may as well have had a tornado blow through because the amount of work leaving something like that half done is worse than not doing it at all! So what I really need to do is remember before I start something :)
So today I'm planning on taking it a little easier. A little slower. And it's cloudy out again today - a good day for sitting in front of the fire anyway :)
(one of my kids took this picture - they love the fire as much as I do :)