Really want navel piercing however…

I wish for navel piercing for years and now I said “fuck this shit I’m getting it” and yeah I do. I feel comfortable enough to do it and after years of shits and no teenage years because I was obsessed with calories, I’m trying to live my life like person my age (and relapse hahah), and piercings is part of it right?

However I have one real habit and thats sucking in stomach, no matter how much I weight, it’s in my mechanism when I step outside or have visible stomach, at home infront of parents as well. I just can’t stop and it makes more comfortable.

But can I have piercing in navel while sucking? Or it might trigger rejection or anything? I feel trapped again that I again can’t do something without my ED being somehow involved