I just had something like that myself. I hope to strike the right chord with my question, which I likewise posed to myself at that time when I was miserable and now a little later after my recovery. Have I ever put such a focus on how exactly I was doing during a flu/cold? Have I ever looked so closely at my symptoms, how long I've been ill, what exactly the effects are? Can I even remember past illnesses of a similar nature? My answer to that is "no". In the past, I never really paid much attention to how exactly I was feeling and even when I was really miserable, I knew I would recover. Back then, nobody was afraid of dying because of the usual symptoms. That's why people didn't pay attention to every cough, cold, blocked sinuses or mucousy lungs with such argus eyes.

So the question for me is how can I be sure that it is an orchestrated thing, something deliberate or even lab-bred? I am not. Because I think that it is enough to drive people so crazy that any disease that seemed normal before now becomes a killer, even if you haven't helped at all. Man, with one of his immensely great powers of imagination (which on the one hand is a wonderful quality), can drive himself completely crazy and imagine things which he formerly considered harmless and now, because the power of imagination has been promoted, consider to be very harmful, although the symptoms need not have changed in strength and duration.

Anyway, I'm glad you didn't let it get you down.