I was absolutely fine and then suddenly i fell ill. It started with a pain in my stomach which followed with me being constantly sick and having an upset stomach. This lasted for about 24 hours and then I started feeling hot, then suddenly cold, with cold sweats! Im constantly tired, have no energy and my whole body aches and when I get up from lying down, I am very dizzy and my head pounds! I am also unsteady on my feet. The sickness has stopped now as well as the upset stomach but I am still experiencing everything else and was wondering if anyone had any ideas as to what is wrong?