Completely exhausted always!

Danielle • 33yo, first time mom and so excited for it all!! Married 10.03.2014 and we are over the moon about our Nov baby boy!
I'm 12 weeks today. I am always exhausted. On the weekend I dread having to get out of the house because it feels like so much work and all I want to do is lay in bed.
Does anyone else ever feel this way??? 😞