Vertigo can be a nasty condition to deal with, actually more of an inconvenience. Did you physician give you any meds such as antivert?? Also, ensure you are well hydrated before heading to a stand in warm weather conditions while wearing a suit that will cause excessive water loss. The diffference between fatigue and heat stroke is only an additional 3% dehydration. So hydrate, hydrate, hydrate. You may have to pee a little more so just bring a bigger bottle.