Hi,
In answer to your ?, yes it is perfectly normal to be anxious about your job and your studies. I am an OR supervisor and we train new grads into the OR, it takes them about 1 year to be clinically competent, and another few years to be really comfortable. We tell them to go day by day, and to remember what they have been taught. I chat with them frequently to assess their progress as well as how they are feeling, and they are very proud of their accomplishments, but are still very nervous about being nurses in the OR. Ask any old nurse how they felt when they first started (if they can remember) and they will tell you that they were scared, but some old hand took them under their wing and helped them along.
Good luck,
x91D