Nipple piercing -WARNING: NIPPLE PICTURE

Okay so I got a nipple piercing a week ago and now looking at my left one it looks like the barbell isn't like, long enough I guess? I'm not sure, but should I go to my piercer and have it changed or am I just overreacting? 
This is my left one, the balls of the barbell are like really close to both sides. I read that the barbell is supposed to brb slightly visible from both sides. I assumed it was swelling but it's been almost a week (I got it last Monday).