Has anyone ever had an EMG to diagnose fibromyalgia?

Hi! I had an EMG two days ago. My neurologist was very vague when I asked him what an EMG is used for to diagnose diseases etc. He never mentioned fibromyalgia and said it can diagnose a pinched nerve, and nerve disorders. I don’t have any pinched nerves. I have to wait two weeks until I find out the results. Anyone ever had an EMG?

He maybe looking for nerve damage
Their are several things the test will show. Doctors will also rule out other conditions while treating fibro