Breasts?

unknown

I cant Find anything exactly like what I’m trying to ask on google so I came on <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a>, so ladies please help me out! Anyways.... if I feel my breasts, INSIDE the breasts I can feel a round boney-like “ring” around/ in the aerola? I’ve always felt this for years now, since I was pre teen pretty much, so it’s nothing new... but is this normal? Basically my nipple area you can press right in. But literally if you press all around the aerola, you can feel a boney-like “ring” inside.