Tired of being tired and cranky

I am so cranky all the time and I'm so tired of feeling like this. I have low energy and feel like there's so much to do that I can't get done and it just makes me more cranky. I snap at my husband for not knowing what I'm thinking and for not being sympathetic with how I'm feeling. 
I get 8-10 hours of sleep a night and am still tired. My feet hurt when I wake up which makes me cranky first thing in the morning.
Everyone keeps saying the end result will be worth it, but I'm tired of being pregnant right now and just want to feel normal again. I hate saying that and it makes me cry to think about. Anyone else feel like this? 
Suggestions on how to get through these emotions are appreciated.