Ear piercing is bleeding over night?

I've just gotten my ears pierced about 1 week ago , and during the day its just fine, nothing wrong with it. I clean it with antiseptic ear care every morning & night. But every time I wake up , there's dried blood over my earring. It was never there before I went to bed. After it happened 2 times to me, I went to a mirror & pushed the earring from the back so I could see under the stud from the front side. I noticed the earring cut a layer of skin off my ear. Then I noticed like VERY VERY VERY little puss, just like a tiny drop of it. I wiped the puss out. After that , for the rest of the day it's fine, but when I wake up the next morning , it's probably is gonna happen again (it's only happened 2 times to me so far). Help please ? How do I stop this & about how long would the process take?

Other info;
-After 3 days of getting the pierce, I switched to a stud from Claire's, but after one day, I switched it back to the original ones I got pierced with.
-I'm 14 years old.
-It was swollen for about 2 days after I switched it back to the original earrings.
-When I switched it back to the original earring I got pierced with, it took SO long, like almost an hour.

How do I stop this & about how long would the process take?
Thanks for your help !