It has come to my attention that many people don't actually know where their stomach is. Most people who complain of having a stomach ache are not at all talking about their stomachs, but are having intestinal pain (see It's a Gas, Gas, Gas!). I happen to be an expert on gut pain, so here is a handy dandy graphic for you, so you can identify what part is involved in case you are having pain in your belly area. Of course I am not a doctor, but I spend enough time googling, and hearing about my guts in doctors' offices, that you can trust my anatomical knowledge:
(All of my pictures are bigafiable by clicking them, if you didn't know- and this has been edited to be less funny and more accurate, in case someone decided to refer to a humor blarg in a real emergency. Note, stomach is cartoonized for cuteness.)
I hope that helps.
But most of all, your guts are not a laughing matter, okay maybe a little bit, but if things start getting weird in there, please see a doctor. And tweet about it, people love hearing about intestinal distress on Twitter.