For at least a year I've been occationally getting a hard lump in the center of my chest, just under where my ribcage connects (sternum I guess? But very close to connection of my ribs). It doesn't hurt if I put some pressure on the lump, but sometimes the lump gives me increadible pain. Sharp reoccuring intense stabbing pains that give me a shock about once every minute or two. Strangely though, even when it gives me these painful shocks, it still doesn't hurt if I press down on it with reasonable force. I think it probably has something to due with my heartburn (I get that pretty bad to the point I'm almost sure I've got acid reflux). Sometimes I can just take a lot of antacids and the pain subsides (albeit not very quickly at all), but I'm worried that maybe this lump is something that's not supposed to be there. It's a fairly prominent lump -- if I suck in my stomach as far as I can then I can kind of see the outline of it (and I'm 6'' 190lbs, kinda fat in my midsection). It seems symetrical and oval shapped with the longer axis running vertically with diameter about 1 inch. It's smaller axis runs horizontally with diameter about a half of an inch. There's no specific trigger to it, but I find that some foods can cause the pain to get worse (salty foods it seems). I know that you'll probably just say "Go to a Doctor, lumps can be serious", but I guess what I'm wondering is if other people have heard of having lumps there, or could this be what an ulcer feels like?