Ive had the flu and have this cough for 3 weeks i need to get a doctors note to excuse me for the days i missed please or i wont have a job ?

Dr. exam, then note: A doctor can write a note after doing an in-person exam. Generally, doctors do not write notes (such as work-excuse or school-excuse notes, or back-to-work or back-to-school notes) without an exam. That is because a doctor's note is his written, signed, professional opinion, on whether a patient should or can do a particular activity. An in-person exam gives confidence to the doctor's opinion.