Hi I am 21 years old and for about 2-3 months have been feeling faint all the time but mostly when im driving or in hot environments. My blood pressure sits at 95/70 and have recently had a bladder infection which i have been treated for. The doctor just put this down to my build as i am small, however I am a health professional myself and know that my blood pressure normally sits around 110/60, any ideas of what it could be as im getting really fed up of it now let alone it being dangerous to drive