I've had about enough of this HEAT!! I'm not a big person but the heat makes me physically ill…

I've had about enough of this HEAT!! I'm not a big person but the heat makes me physically ill within 5 minutes. And I don't mean direct sunlight either. I can be in the shade with a nice breeze but if I start sweating it's over with. I'll either be coughing uncontrollably or vomiting. I HATE HATE HATE IT, summer is my favorite and this the first time I've ever been like this!!!