I have the same sounding thing. It bugged me so much I searched the internet for it, I finally did the best thing and went in for a quick checkup. It didn't cost all that much. For me it was nothing to problematic. But! I would never suggest just letting things go without getting it checked because you read something on the internet.
So, go get it checked if it bothers you, you will feel better after you go and know for sure what it is or isn't.
Good luck to ya