So so so tired

Amanda
How have you delt with being completely exhausted?  I'm expecting my 3rd around Jan. 12 2018 and I am beyond tired.  I can't sleep at night, I get hot and cold and my body just aches!  What has helped you get a good nights rest?  
We haven't told anyone yet that we are expecting (waiting for the first appointment next Monday) so I can't explain to people why I'm feel and probably look like a walking zombie! 
HELP