collapsing !! :((

i'm soo sick ..nearly i was going to collapse at college today
i was late 25 min for the exam ...and i was having a killing headache which i still have ..
i left the exam early solving 4 questions only and i left the 5th ...i felt like i can't do this anymore :\\
i'm feeling soooo tired ..my head not okay
i even was about to cry the whole day but i kept my tears ..so the headache won't get worse
i cried when i'm home ..don't know why i was feeling this feel
everything is in a mess ...i feel i'm missing something ...