Ear Stretching help, Skin turned black.?

I've been stretching my ears for about 9/10 months now. Last month when I tried stretching to 7/16ths I really messed up my ears. I cleaned them everyday but put a 2g in so my ear wouldnt close all the way. After three weeks they are basically healed, dont hurt ect. I can actually put a 0g in one with no pain what so ever. Here's my problem, while both ears feel fine the skin around one turned blackish/purple. is this from the healing? is my skin dead? what should I do?