I remember sitting in my Adult Nursing class in my second semester of an ABSN program (after doing quite well in my first semester) thinking EVERY DAY: "This is the day they find out I'm full of crap, that I'm an imposter, that I know absolutely nothing about what I am doing, that I have no business here or pursuing any type of health care degree and I need to go home and plant flowers or something else far, far away from patients..."
I'm dead serious. It kept me up at night - I wasn't worried about grades or courses or papers or any of that stuff. I was afraid they'd find out I was full of it.
(I wasn't, of course, but it certainly felt like it!)
So, yeah, I dealt with it.
Scared me to death for a whole semester. And I too think it's very common.