Needle stick injury

Hello! I’m a nursing student and I got my first needle-stick injury. I was in the med room drawing up insulin when it happened. I was trying to get the bubbles out the syringe then it slipped and knocked my fingers. My preceptor told my charge and then I got in contact with my professor. I know I have a really low chance of contracting anything (no patient was involved, new needle, I cleaned the insulin vial prior) but I can’t help but just spiral. I’m not getting tested because I’m not an employee of the hospital I’m at and I don’t know my schools policy. I don’t know what to do and was just looking for someone to talk to about this. Any past experience is welcome and appreciated