About piercings and healing?

I've only got my ears pierced and that was twelve years ago and they still puss and swell if I don't wear stainless steel or whatever the kind is that's for sensitive skin and what I'm wearing right now and even then I still have to clean them all the time since they get covered in I don't even know what.

But I'm starting to think about getting my lip pierced and I'm wondering how good of an idea this is considering my apparently sensitive skin and eczema and allergies. Would it just never work out properly? Or would it most likely be just like normal.