Did anyone's sex drive decrease after marriage?

Tina
I was always attracted to my soon to be husband. We just got married sept 6 and I couldn't wait to make love to him! Now weeks have passed and I feel like I have no sex drive. Is that normal or could I be pregnant? Could I have conceived during honeymoon? I've been so tired lately today I'm still in bed and could sleep more! It's almost 4 pm! What's wrong with me?