I don't think those BF calculators/scales in PE are very reliable. I remember getting mine and I was ~20% or higher and I know I'm nowhere near that.
Yeah. It's not like my ribs show or anything, because they rarely do. Sometimes when I'm stretching.
But in my chest their is a bone that's visible between my pecs. I think It's just because I'm so skinny and it'll go away with time. I just really need to build more muscle on my chest.