Could you subconsciously want something but not consciously want it?

Yes. It happens all the time. Every time we make a choice, it is a conscious choice, while subconscious choices are made for us.

Example: Where food is concerned, we can consciously make a choice, burgers or chicken. We will consciously choose where to go for it, or stay home to make it ourselves.

Subconsciously, the body realized it's hungry, and what it's hungry for on a more molecular level.