Is a Rope chain (watch) that was stretched?

I have a gold rope chain watch that is fairly thick but it's a dainty woman's watch. The first day I put it on I caught it on a doorknob and stretched it. Can it be repaired without cutting it (Simply reshaped to the original size). It is stretched... not pulled apart. The shape is still there - it is simply thinner because it has been stretched but the shape is easy to see and still maintained. Because it was not an expensive piece, obviously paying hundreds of dollars to fix it is not an option. It was a Kay Jewelers watch and it is solid gold. Thanks so very much for your help!