Why Do Bright Light, Temperature Changes, Or Gusts Of Air Trigger Nausea And Dry Heaving, And Could It Be Related To My Pending Migraine?

Hi, if i look at bright light i get nauseous and dry heave a lot. if the temperature is changing or even a gust of air hits me, i get nauseous and dry heave. its getting worse, my doctor put me on migraine medication while i wait for CT brain scan and seeing a neurologist. I thought i would check on here if anyone else has experienced this and has any idea whats happening.