So I just started a new job a couple weeks ago and I thought I've been doing really well, except for the fact that a few weeks ago my boss told me that some one complained about me because I didn't know where something was. And then today I guess I had another complaint like that. 

It doesn't seem like a big deal to me, and she didn't even make a huge deal out of it or anything it was kind of just a "keep in the back of your mind" thing. But know I literally feel sick to my stomach and broken. I feel like I'm gonna loose my job. I feel like I am worthless and I'm not doing anything right being here. 

I cannot focus on anything else right now other then how I messed up and how stupid I am. 

Any thoughts? Do you ever get negative feedback at work and how do you deal with it? 