No motivation to do anything.

I currently don't have a job (I get paid monthly from the military for my disability) and I'm going to school. I currently only have 1 class a week since I dropped my online classes so Fridays are the only days I have to do anything. My question is, is there something wrong with me that I don't like to do anything besides lay in bed and watch Netflix? I don't feel depressed, I just feel like since there's nothing I need to do, it's easy for me to just be lazy. Sometimes I don't even want or go to school. What's wrong with me?