One more suggestion: Younger folks tend to uptalk, meaning that the end of every sentence, even if it is a statement sounds like a question. Don’t. Do. That. Definitely makes you sound immature (if you do it) and too young to handle anything. Presentation is important, even to those physicians. Believe me, physicians are sometimes not so great themselves.
Hang in there, and take the other positive advice more experienced nurses have given you here.