extremely low bloodsugar 22 weeks

The past two days I have been working, my coworkers noticed that I was shakey and urged me to take my bloodsugar it was 52 and I had eaten before work. The same thing happened the day after. I plan to ask to have my glucose testing done before 28 weeks which is the norm. At work I am a cna I really dont have time to stop and snack all the time. Any advice?