What did the doctor do first?

M: What’s the matter with you?
W: I’m not feeling well, doctor. I have a fever.
M: I’ll take your temperature first. How long have you been like this?
W: It began yesterday.
M: Do you feel thirsty?
W: Yes.
M: Do you sleep well?
W: No, last night I could hardly sleep.
M: Well, it’s probably the flu. Take this to the drugstore.
W: Yes, doctor.
M: Take the medicine and come back in three days.