Beyond tired and sore

I'm still in my 2nd trimester, 26 + 2 weeks. The last couple of weeks I feel like I start a task and just cant finish anything. I'm SO tired, and my body just is so uncomfortable. Ive been working on organizing my kids room for a week and a half.......it should have taken just a few hours. Today I felt like I could get some things done, but after running errands for an hour I was totally trashed for the rest of the day. I know its frustrating for my husband. It's also incredibly frustrating for me! I have so much I need to get done, and not only am I not able to get them done but the list is growing constantly. Anyone else struggling with this and still in the 2nd trimester?? Any tips?