had a strange thing happen tonight was outside talking, weather was fine, not overheated but started feeling very queasy, shaky, before I could get inside, got dizzy and lightheaded all I could do to make it to a chair to sit, my husband as with me, I got very clammy, extreme sweat feeling like I had to throw up, had some water, hands were shaking a lot, blacked out for just a second moved to the couch extreme nausea couldn't make it to restroom, threw up right there, nausea of course immediately subsided, checked bp, slighty high but better w/in 15 minutes or so still have a headache. Do plan to check with my doctor tomorrow. I am a 53 year old female.