problems with earrings. please help?!

I'm thirteen and I got my ears pierced in August 2009 for the second time because I have fat ear lobes and the first time I just got regular earrings and the posts were too short so my ears didn't heal. After six weeks when I could take them out I did but I couldn't get the other pair of earrings in so I just put the other ones back in. Then every time I tried to take my earrings out I would get scared and just leave them. So I just left them and kind of forgot about them for a while and pretty much just pretended I didn't have pierced ears. Then in December 2010 my grandma and grandpa gave me some really cute Christmas earrings and I really really wanted to wear them so I was kind of on a mission to take my earrings out. I didn't want my mom to take them out because she would just pull them out and I knew it would hurt because my ears were a little tender. Eventually I got them out and cleaned my ears with the cleaning stuff they gave me when I got my ears pierced. And I cleaned the earrings with rubbing alcohol before I put them in. For a while I changed them every day now I try to change them every few days at least. But when I take them out by the actual hole it's.. black! I tried cleaning them with the cleaning stuff again but they're still black. They don't hurt though. And there's this black stuff on my earrings. Like on the post. Only by the end.. where it's touching the front of my ear which is where it's black. I have no problem putting them in or taking them out or anything. And I know the earrings aren't too tight on my ears or anything because I had these other earrings before and if I wore them for more than a few days my ears would hurt. So I got these other ones and I can wear them for weeks and my ears don't hurt at all. I can sleep without my earrings at night but I don't like to though. Should I tell my parents? I really don't want to tell them bacause I'm scared that they'll make me take them out and the holes with close up, even though I can sleep with them out. Help!