Don't feel too awful if you can help it. Everyone screws up at some point. I will tell you...I f***** up majorly many years ago when I was a medical assistant. . . TWICE! First big boo: A lady came in for a fasting blood sugar test where she had to drink a sugar liquid, then get her blood taken and tested every hour....six times. She sat in the waiting room reading or went for a walk around the block...stuff like that all day in between getting poked and getting her blood drawn. That night, I realized I drew her blood every hour...did all that fine. But I realized, OMG! :doh: I forgot to give her the sugar drink!
The whole test was for nothing....it wouldn't show how she handled sugar. I had to call her and tell her she had to come back and do it all over again. I wanted to crawl into a hole and die. I didn't tell the doctor. He wouldn't notice. And I was so lucky she was such a kindly, forgiving, patient patient. She said, "Oh that's okay. I don't mind at all...really. I'm really into this book and I don't mind sitting there again, reading." I could have said nothing and the test would have looked like she didn't have a blood sugar problem, but I wouldn't do that. That would really be wrong. So, I fessed up, at least to her, did the test right and it all worked out okay in the end.
The other mistake I made was taking a series of chest x-rays....frontal, lateral and oblique. And I realized I forgot to put the film in the thingy. OMG! She was still waiting in the exam room for the film to develop. I went back and told her the x-rays didn't turn out right, so we have to do it again. I felt so horrible...exposing her to more radiation than was necessary. Those were the two biggest, humongousest, work-related screw-ups of my life. :yikes:
I don't know if lots of people mess up that badly, but everyone messes up somehow at some point in their lives. So, hang in there. Crying is not a bad thing either. I didn't cry those times because I didn't have time to...had to correct those problems asap.