I feel like I'm drowning

Hey guys never posted but it's been a little while since I passed the exam and I just got my job at retail. I'm so nervous and I'm put into the pharmacy when so many people have already called out. I'm not familiar with the system and I'm expected to know the ropes. I can hardly be trained at all because there is only the pharmacist and another tech with me. Is this normal? I'm only on register atm but I'm terrified I will do something wrong. I feel like I'm slowing everyone down. I feel like I want to quit already and apply to my local hospital for the chance I'll be properly trained but I feel like I'm just running away when it gets hard.