Is my new piercing infected?

Okay, so I got my piercing on Wednesday (3 days ago). I didn't get it done professionally- my friend did it for me, but the needle was sterile and so was the earring. The earring i used was the one i got my first piecing done with, and had no problems. I have been cleaning it. The piercing i got... show more Okay, so I got my piercing on Wednesday (3 days ago). I didn't get it done professionally- my friend did it for me, but the needle was sterile and so was the earring. The earring i used was the one i got my first piecing done with, and had no problems. I have been cleaning it.

The piercing i got was:
http://24.media.tumblr.com/b70487709f8d7...
just slightly above the 'O'

Anyway i think it may be infected as behind the ear it is slightly swollen and red. Is this normal or not?
And if it is infected what should I do?
Update: the swollen area doesnt feel any different to my other ear to touh
3 answers 3