How can I get more energy/cope with little energy?

I'm 9wks4ds today and since I turned 9wks I've been SO exhausted and have had no energy. I've been taking my prenatal, eating when I'm hungry, and drinking as much water as I can (I try to make sure to at least drink 7 or 8 cups a day. Sometimes it's 6, I just honestly forget, but I'm working on it.) I'm moderately active as well (except for this week cuz of the low energy).

Am I just exhausted cuz baby is growing or do I need to do something else to help? I'm trying to rest so I don't strain myself, but I have such low energy that doing the dishes exhausts me even more. And I'm ready to fall asleep for the night at like 8PM.

Any advice?