I'm 36 yrs old and have no sex drive. It is putting a big strain on my marriage. I don't know why I don't have the feelings I used to have. We have 7 children and have been married for almost 20 yrs. I want sex but when it comes down to it I can't bring myself to have it.I love my husband more then ever and don't want to lose him over sex. Please help. :(