Before everyone says "yes you imbecile" it's a weird one.
Just below my rib cage there's a really sore bit, feels like a bruise or maybe the the sore bit around a nasty spot, but totally invisible can't see anything there at all, skin looks normal. But if I poke it really hard, through the padding I can feel a small solid lump that moves when you push is, about the size of a small pea. Thoughts?