trudie is at the doctor's because she has a terrible headache, pains all over her body, and flu-like symptoms, not because she has hurt her head.
trudie does have a temperature, as mentioned in the dialogue.
the doctor mentions that it sounds like flu, not a stomach bug.
trudie should take two tablets a day after meals, not before meals.
the doctor does advise trudie to take some cough syrup.
the doctor advises trudie to go to bed and get plenty of sleep. antibiotics are mentioned as a possibility if symptoms haven't improved in a day or two, not immediately.
the doctor mentions that it's too late for a flu jab this winter but suggests considering it for the next year.
the doctor advises trudie to go straight to bed, so the statement that he thinks she shouldn't go to bed is incorrect.