Nipple piercing

i have had my nipples pierced for about 6 months now and i have bumps on the sides of where the balls are. well one nipple has it on both sides the other only has it on one. there is also puss that comes out but only when im in the shower to clean it. there are crusties and sometimes the bump will have a little spot that’s white that i figure it’s puss. could my piercing have got infected or is it still healing ? it doesn’t hurt or anything and i do sleep on my stomach(i heard pressure could mess with the piercing)