i smoke around nine cigars a week, and still get that feeling sometimes, mostly on an empty stomache, or if i smoke too fast with a strong 'gar, just like the other's have said. the only time i though i was going to actually be sick (drive the round white bus, making alot of left turns) was when i was smoking my first camacho, in a bedroom, with the door shut...no vintalation at all. i'd only been smoking about 6 months, and man, i thought my head was going to spin off...got the cold sweats and everything.
my tip i guess, is to sip a soda or something with alot of sugar in it with the smoke... i do this mostly b/c i like the way the flavors go together, but it also keeps one from getting that sickly feeling on a minor level. but as your taste develops, you'll be able to tell the warning signs of getting sick, and slow it down or whatever you need to do...at least thats the way it works for me...
sorry in advance for the speeling errors...and the overuse of elipsis...