Does anyone else feel like they chose the wrong path?

Hey all, hope you all are fine, I have a massive knot in my stomach because I'm studying for the nursing school entrance exam. I have been volunteering in the hospital, but I am starting to lose it. Every night I cry because I'm so stressed about passing this test. I was so desperate for it to stop that I would have paid someone to take my HESI test for me. Is anyone else having second thoughts about their job?