On-and-off feeling of falling sick...

Can someone tell me y this is happening to me?

I juz feel the feeling of falling sick on and off.. like a few sneeze here and there...and running nose for a few minutes... or irritated throat or body aches...

all signs of going down with something BUT that something just refuses to come on fully...

feels more terrible going half sick... :(

any way to make it come full-blown at least i can concentrate on being sick and recovering from it...instead of always staying on the verge of falling sick ya? *roll eyes*