i’m gonna go with “holy fuck” for any nipple piercing. regardless of scar tissue. typically scar tissue will feel like more pressure, because it’s tougher and requires a little more muscle, but not more or less painful. go for it!
on a scale of meh to holy fuck, how bad do you think it would hurt to get nipples re-pierced? i've been going back and forth trying to decide whether or not to do it.
Note to self: cut yourself some freaking slack already. You are doing the very best that you can.