i suddenly feel sick very sick in head like when you feel when you have fever i feel i have fever but i dont have fever. i get sick feeling more in head and is followed by nausea i feel to lie on bed and call an ambulance cuz its so disturbing. sometimes i feel strange headache that goes away in 4-5 seconds more on right side this feeling goes away in few minutes but all i am left with is anxiety i get this several times a day like spells of something i dont know and cant describe . from past week i have been experiencing little slurred speech. i am experiencing confusion and brain fog. when i look myself in mirror i feel i have changed everytime i see myself. i had 2 ct scans 2 months ago one in july and other in august and mri on same day all normal. i am afraid has radiation from ct scan caused me something.