In the past three years ive gotten the flu about three times, and ive notice that i never get a full on flu
situation its always just moderate symptoms, i never break a fever, mild headache, weakness, little to nothing on runny nose, no body aches, then i feel like i got better but they return after a week, so its like their prolonged symptoms, the whole flu off n on lasts about three weeks.
Because you never had the flu that's why. you probably had some very heavy bad colds but not the flu.