Energy...where are you?

With Mason's arrival rapidly approaching I find myself with a mile long to do list. Things that "need" to be done. Things I "want" to get done. And things that would probably fall more under a nesting category than anything else. However, my energy seems to be depleting. Today we worked for a couple of hours on unpacking. I also did a couple loads of dishes, made meals etc. But I was spent! Then a family trip to the store...yikes. I wasn't sure I was getting up from the couch. Why is it that something that gives you such a wonderful blessing, can make you so miserable? I am ready for this pregnancy to be done...as long as he is healthy of course!