What Could Popping Bubble In The Area Of Cartilage Piercing Indicate?

I got 2 cartilage pierceings about 2 months ago almost 2 months, and the bottom one seems to be healing perfectly fine but the top one has never really healed. I clean it with the ear care solution the piercer gave me, almost every day or every other day. I had to wait at least a month before I can take my pierceing out. And when I took out the earring I felt this little bubble behind my ear where the back of the earring is. So I cleaned my ear like normal put my earring back in but then my ear started bleeding a little. It kind of felt like my pierce had popped the bubble I guess but it s a little uncomfortable every once in a while. Is this normal? Should I be worried.