Cartilage piercing hellp?

ive had my cartilage pierced for over a year now and mine did the exact same thing. Good news though, because evetually the bubble will pop and go away. i had one and it was painful and black(had blood inside) and it was very disturbing. after about 4 months mine popped and i cleaned it with peroxide and it didnt come back. i would recomend that you keep the earring you have in now in there because changing it will only make it more painful, trust me. id say just clean it twice a day with rubbing alcohol or peroxide so that it stays clean. and if it gets splashed with river water then you should clean it right after that so you dont get infection! good luck!(: