Weird looking shoulder?

[DonQuixotee]

Hey everyone, I've had this bump on my shoulder for as long as I can remember. It doesn't affect my range of motion or strength, but it feels off, especially during shoulder exercises like face pulls, shoulder press, or lateral raises. I've never had it checked by a doctor and I'm wondering if it could be from an ACJ injury or something similar.

Recently, I've been trying to get back into the gym and I've noticed that during shoulder exercises, I mostly feel the burn in my non-deformed shoulder. It's also really hard to build my lats on my right side.

Can anyone provide insight into what this might be? I'm planning on heading to the doctor soon to get it x-rayed.