Am I at risk of an ear cyst?

Dear Doctor, I had my ears pierced over six months ago, for the very first time. Everything was going well. However, I noticed a swelling on my right earlobe about a month ago, and right now, it looks like it is only getting bigger. Did something go wrong? I’m worried because it keeps on swelling and looks like a ball below my ear. Is it an infection? How bad does it get? What causes it and how do I get rid of it?
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Dr. Rachna Pande