Open Question: My job is depressing me!?

I know I shouldn’t be complaining given the economy.. I have my Bachelors degree in Business and HR Mngmt. I have been here 3 years. I make 13.50 an hour. I am still punching a time clock. It is a factory and I feel very underutilized. I sit all day long with a few projects here and there. The benefits are wonderful and I have a son so that is a perk but honestly after 2 years no raise and going home everyday feeling worthless and depressed I can’t do it anymore. I need more money and ecerytime I ask they tell me no. It is a small family owned business and they have their favorites. Im guessing Im not one of them. I do not know what to do. I didnt spend that time earning my degree to be a loser and I feel like one. I am currently trying to find another job. No luck yet. But this is affecting my home life because I am so miserable. Any advice?? I feel like I got the wrong degree or maybe just picked the wrong job. I dont do anything challenging or rewarding here.