Freaking out over nothing

dg4 will often say his stomach hurts. If you feed him the pain goes away. I've often wondered why he says it that way, "My stomach hurts." Does he know it's hunger? If not, why not?

When he says his stomach hurts I begin to think, "Oh no, could something be wrong?" Or "Does he have cancer?" or "Can kids have ulcers?" If he could just learn to say he's hungry I'd have less stress.