Ouch... my earlobe piercing hurts?

It's normal for it to be sore, but keep an eye on it. I got my ears pierced at Claire's when I was younger and after a few weeks they both became extremely infected and I had to let them close up. I know a number of other people who have gotten infections from being pierced at Claire's as well. Granted, there are several who have gotten by fine with their Claire's piercings, but I'd just keep an eye on it if I were you.