Anxiety with shift change

I’ve been working for about 2 months off of orientation/ without a preceptor and every once in a while I get so anxious during shift change/ after when I finish up charting. Even though I know I did the best for that pt and gave all the meds and tripled checked my work I can’t explain it. Today I had a patient come from surgery - I work nights- and they didn’t have a diet in. It was a crazy night with a lot of running in other rooms that weren’t mine due to sundowning/confusion. I felt terrible and asked the day charge to show me how to do it because I didn’t learn it on orientation. I have no issue with giving the actual report at bedside but once they do their own assessment and talk I get so anxious for some reason.