Menijitis Symptoms

Just a couple of days ago I started having some light headaches that made me just a lil bit sick to my stomach, nothing to bad. Today though after taking a nap, the back of my neck had pains.. I can move it side to side fine withought any pains but if I move it down, it starts to hurt.. I don't know whether its because I slept in a wierd position or not.. But I started to think about the menijitis symptoms and it started to worry me.. Expecially since my cousin had menigitis just a few months ago.. When should I really start to get help? My headache is gone though and I heard you have to have severe headaches if you have meningitis and so far I have no headaches at all and no fever.. Is it possible to only get one symtom out of all the others and still have menigitis? Thats what i've always thought about.. What if you only get a 1 or 2 symptoms and can't tell whether you have it or not?