: doctor, I have a pain in my stomach.
B: relaxation. May I have your name? How big this year?
A: my name is XXX, 18 years old
B: well, what did you eat this morning?
A: this morning I ate some bread, and drank a glass of milk. Not long after, belly began to pain.
How long B: pain? Are you sure that bread and milk is fresh?
A: I'm not sure whether they are fresh, the pain has lasted for three hours.
B: after breakfast you eat what?
A: no, you eat those.
B: don't worry, no problem, I will give you some painkillers, eat the rest will be good.