Guilty for feeling miserable

Anna • 30. Married 5 years. Son born 12/4/16. New baby due 8/28/19.
So many mixed emotions! This is my first baby and I'm 35 weeks and totally miserable. And now I feel guilty for being miserable because I feel like I should savor this time and live in the moment and I will miss him moving inside me. It's a vicious cycle!