Out of breath....

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 6w5d and have added morning sickness to my days....
I've noticed in the last two days I am always out of breath. Things as simple as walking around the house getting a few things done has me huffin and puffin! It's crazy!!!
Any one else experiencing that?