Advice for job

Hi I currently work at little ceasers and I work for 12 dollars on hour and I work 37.25 hours a week and I’m 16 still in school and it’s stressing me out and my manager told me I was getting a raise to 13 and it hasn’t appeared in my checks it’s been almost a month too scared to ask because she would literally cut my hours and I don’t know wha to do I’m thinking of quitting but it’s so hard to get a job any advice on what to do plus it’s so hard to find a job in salt lake nowadays