qfmike737,
i agree. In my first year of flying i too was sick, i think i had about 3 middle ear infections, the first time i was sick i still flew and luckily my eardrums are still intact, however i would never do it again. Star84, i don't know who you work for, but at QF they take ear infections very serious and don't want you flying if that's the case, that's why you have sick days. On top of that making it worse for yourself, it looks bad if you have a cold etc and your colleagues won't want to catch anything from you either.
I just got prescribed some antibiotics from the doctor and it seemed to clear it away. One big thing to be careful of is that if you are taking over the counter medicine, decongestants etc, you need to make sure that they don't contain any ingredients such as sedatives that may be banned or not allowed by your employer. I know some airlines if you take something you should let the CSM know (correct me if i'm wrong).
Your body will build up immunity to these things over time and eventually you will be fine. Just think, you're stuck in an aircraft full of people who could have anything, so until your body get's used to it, you're bound to get a little sick.
Good luck!
Oz