Camera Issue

I’m very new at Blender and I was working on a model and when I went to change camera view the camera was no longer there. What was even more confusing to me was the fact I could still enter a camera view and do a render. Does anyone have an idea how I can get my camera back and what happened so I don’t let it happen again. Thank you.

It might have been moved to a different layer , check all the layers just in case you moved it by accident.