Sex drive???

I really need help. My husband and I haven't had sex in months because my libido has been SO low. Not because of our relationship or attraction. I am so attracted to him and it's like I want to have sex but my lady parts wont react. Also, we have a picture perfect relationship! I dont see anybody else the way I see him. I don't think anybody else is even close to as perfect as he is so it's not like I want somebody else either. I'm not on birth control or anything that should alter my libido please PLEASE HELP!