This is the second time this happened. The first time I got a shape object from the designs gallery and I couldn't remove and I just ended up covering it. It happened again, except now the line is light green and it is in a place that cannot easily be covered. When I try clicking on it,it never highlights. It will highlight the whole back page before highlighting this pesky rectangle. I don't know how it got there or how to get rid of it. What should I do?

And I am too far along to start over.