Wish I had the answer

My husband and are together for 13 years, in August we will be married for 2 years and I am 37 weeks pregnant with our first. I found out that for the last 5 months he had an affair with another woman and he enden it. I have decided to stay and try and work things out for the sake of our baby as I don't want to take away the privelage for her to grow up without both parents. Some days are fine and some days I have so much hatred and sadness. I never thought that this will be something happening to me as I value the vows and meaning of being in a marriage and I thought he did too. Now I feel like marriage is no longer something special between two people. Will this feeling fade over time?