Piercing/ medical question?

Okay so in 3rd or 4th grade I got my ears pierced (I am now a senior in hs) and these fluid filled "balls" (like smallish acorn sized) formed on the back of my earlobes near the piercing site. Is it possible that this was a keloid? I then had surgery to release the fluid that was inside, and they have not returned. Also, if I want to get my nose pierced is it possible that something similar could happen again? Thanks for your time!