Low Salt?

Firephoenix013

For the past four days I have had a migraine off and on, it comes and goes and I can't get it to go away. My joints are also hurting like crazy, especially my ankles and wrists and popping like mad. I have also been super tired. Today I have had a weird craving for something, couldn't figure out what it was. Finally I found some sunflower seeds and figured I'd try those. Popped a few in my mouth and found out all I wanted was the salt. I perked up a bit and the headache calmed down a little (though the body aches still hurt like hell) and now I want salt, so I have had a few more sunflower seeds just for the salt. I'm not eating them, I'm just getting all the salt out of them I can. Do you think this means I have low salt or something else?