If you were not out and about (medications can cause interactions during hot weather or when out in the sun, standard precautions are advised) then I'd suggest you call your psychiatrist or if they are not available doctor as it sound like something of concern. If your temperature continues to go up or you feel worse see someone right away.
I read it was on the leaflet but it just sounds like one of those casual little ones on a long list that arnt much bother but woah how i was wrong.. im so hot and dizzy ive drank about 3 litres of water today..
try sucking on ice. yes it is a side effect