Is it normal to always feel like this?

Alright so I always tend to be extremely hot and everyone says stuff to me like "it's freezing in here! Shut the window"
When I think that it's hot, I'm always out of breathe when I'm talking to people,when I stand up I tend to feel very dizzy and if I then try to sit back down to make myself feel better the room will start to spin at this time I feel very sick and don't wanna move at all as I just watch the room spinning and still feeling very hot .
( i realize this is a a few questions but I think it should be fine to keep them all as one big question because they all happen at the same time)