Extreme Mommy Fatigue

So, I've just reached the beginning of my 3rd trimester and for the last few days I've been so drained of energy. I went through a few days before in my pregnancy where I would feel tired but this is insane. I can't even muster the energy to do housework like before. All I want to do is sleep. I don't even to imagine having to get dressed to go out and be social. I fall asleep at random times too. What can I do to help myself gain more energy or is this how it is from here on out? I mean I don't mind the naps in the afternoon but I do need energy to get things done.