Be aware that most of the depression meds actually cause a decrease in sexual desire. I think the only one that doesn't is Wellbutrin. Since you are a partnership - I certainly would encourage both of you to get into counseling. Obviously, as a couple, you guys can't fix it by yourself and need some additional support.
http://www.healthboards.com/ubb/idea.gif
Maybe having your husband take some baby steps would help you - maybe he could seduce you one night - a long bubble bath with rose petals and candlelight. He could make it a sensual - not a sexual - experience. Think of it as revving your engine. Perhaps he's got to realize that he's going to need to work a little harder to entice you. If he shows you how much he wants you by putting in so much effort, maybe it will make you feel a little better to be so desired.
Taking off my pseudo-sex-therapist hat.
Keep us posted. Keep your chin up.