Am I a horrible person?

I'm sorry if this is long but please bear with me .

I'm 20 years old happily married to my husband, but so unsatisfied with my life right now. In middle and high school I honestly thought at this point in my life I would be going to college, getting real close to receiving my degree, but im nowhere near receiving my degree. I am no longer in college, and I feel like a failure. I feel like such a horrible wife and horrible person for saying I am unhappy with my life. I'm not unhappy with my marriage but I am unhappy with myself. Things have to change in the next year or I'm going to go into this overwhelming depression. I am already depressed as is now.

Im scared that doing what i need to do to make myself feel more worthy as a person is going to break my marriage up. Right now I am studying for my CNA classes I plan to take soon and my husband has just been so off since I started studying after dinner. He's had a bit of an attitude and I'm worried it only going to get worse the more I focus on my schooling. During dinner we watched a movie together, then after he was done eating he jumped on his phone. I played on mine for a bit then decided i wanted to study. Thats when the attitude seemed to change. When i asked him a question about an app he got so upset that he had to get off the couch to help me find the app. Then not long ago i asked him to get our kitten who kept attacking my feet as i studied and again he seemed so pissed about having to get up. I said " it seems like its such an incinvenience for you to help me." And he got all huffy and rolled his eyes and said "nevermind don't worry about it." Help me ladies. Do you think I am over reacting to his mood?