Lump or Bone?

I'm a 25 yr old male. In the middle of my upper abdomen, I can feel a hard lump under my skin. I'm not sure if its a lump or bone. If I'm sitting down, I feel nothing and nothing feels out of place. If I'm standing up, I can kind of feel the lump and nothing feels out of place. If my laying on my back, I can feel it. My energy levels have been normal. My appetite is still nowhere near what it was before. I'm getting it checked out soon, but I'm reaching out to see if anyone has an idea.

Other info: No blood or anything. I've been pretty gassy.

Its about 6-7 in above my belly button, about 2-3 in below my chest

I think its a bone, like the one everyone has. Ones have it more visible than others. If you pull your chest out its more visible right?