A: Are you feeling OK?
B: My stomach is bothering me.
A: What have you been eating?
B: I had a ham sandwich with mayonnaise for lunch.
A: Maybe the food had something wrong with it.
B: It could be bad food, but I didn’t feel so well yesterday, either.
A: Have you been under a lot of pressure lately?
B: I haven’t been under any more stress than usual.
A: Perhaps you have caught that bug that is going around.
B: I feel like maybe I am coming down with the flu.