Is this normal?

Pregnant for the first time! I am 5wks 1d!! The hubby and I have been trying since October! I know sex is completely ok and healthy to do while pregnant but what I'm wondering, has anyone else experienced low sex drive when pregnant? Does it get better? I had fairly normal sex drive before getting pregnant but now I'm either sick, tired and just not in the mood! It's not that I don't find him attractive because believe me I do! I'm nervous I will have low sex drive during my whole pregnancy and nine months is a long time to rarely have sex. I feel awful because finding out I'm pregnant seems to have made me glow and increase my hubbys sex drive! Is that normal too?