I got my belly pierced almost a year ago, it got rejected. In march I got it redone, but higher up. The first piercing left a scar obviouslly. But everything has been perfect so far. No redness, no bleeding, just regular discharge because my piercing is healing. About a week ago, the scar from the first piercing turned into a bubble? I wouldn't say.. turned.. I don't know what to call it. It doesn't hurt at all, and I don't feel it when I touch it. I tried to pop it with a pin, but that kind of hurt. So I didn't. What is it? And what should I do?