Hi Im A 29 Year Old Male, I Started Getting

hi im a 29 year old male, i started getting very bad headaches at work wich is very physical work.....flat roofing. i dealt with my daily headaches and would fight threw them this all started in august and a month or so ago i had started to get double vision on one day only when i would look to my left then about a week later i had double vision i had it since then. i am recieving an MRI nov 15th. what do you think this could be from?