This Thursday morning I went from feeling great to being incapacitated with dizziness and violent vomiting within 45 minutes. Had to be driven home from work. Spent that day in bed, slight fever, drank only water and nibbled on crackers. Second day was horrendous headache, took aspirin and drank lot of water and ate frackers. Third day, exhausted after a shower, drinking Gatorade and chicken noodle soup. No vomiting since first day, but some diarrhea today and tired. Do I do anything different or just wait it out? I am 65 in great health but under a lot of stress.