Question: Does My Earpods got broken?!
It would be happen to you that one side of your EarPods is not working!
But Really your earpods got broken or that's an Software issue?!
To see that you can do a simple test, Follow the instruction:
1. Go to Settings
4. Scroll down to 'Hearing' part.
5. Turn the Adjust of Audio to the Left and see if it's working!(Normally it's in the middle)
If it doesn't work, You're Earpods may be broken. You can make an appointment by going to Repair - Official Apple Support