A person who is sick is not competent to be deciding on a course of treatment, unless they are, say, Paul Farmer. See a doctor; follow the doctor's advice.
They're better than average, but you have to be willing to question what they say. I know too many people who just trusted the doctor and then had the doctor make some minor slip-up that the patient would have caught. Except "minor" means "well, I guess you're this way for life now. sorry".