"Aspirin Overdose" joke

Jane calls the doctor in a panic. "Doctor, doctor! My little Jimmy swallowed a dozen aspirin. What should I do?"
The doctor asked Jane, "Are you sure it was a dozen?"
The frantic mother says, "Absolutely! Doctor, I'm scared to death!"
The doctor tells the mother, "Calm down. Is little Jimmy crying?"
Jane says "No."
"Is he sleeping?" asks the doctor.
"No." says Jimmy's mom.
The doctor goes on with routine questions, "Is his color funny?"
Again Jane says "No."
"Did Jimmy throw up?" asks the methodical doctor.
"No." says the worried mom. "But I'm so scared. All that aspirin... shouldn't I do something?"
To which the doctor says, "Try giving him a headache."