It sounds like OCD. If this really is affecting your life in a negative way, you should seek help for it.
I did exactly the same thing when I was younger. If I made a sound coming from the right side of my mouth, I would have to do it the exact same on the left. If I did something with my hands on my right side, I would need to repeat it with my left and keep repeating until it was how my right hand did it. The strange thing is that it's kinda disappeared as I grew older. I'm not so concerned about getting things to be equal anymore, which is a good thing!

Best of luck to you
I hope you find the help that you need

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