Should I quit..?

I’m on my 5th day of training and everything feels so overwhelming. Last night I cried my anxious self to sleep and been having stress dreams lately. Yesterday’s shift was hectic because my trainer left 2 hours before my shift ended so I was alone with the other trainee with 2 other coworkers. We had a rush and I felt bad that I kept asking my coworkers questions on how to make certain drinks that weren’t really taught yet. And I felt like I was being annoying from all the questions. And I always second guess myself on recipes, but I ask some just to make sure. Sigh..I’m about to start my shift and I’m anxious as hell. What should I do. :/