i was having the same symptoms as you're describing and my dr. couldn't find out what the problem was. a few months later i had the eyes checked and i needed to start wearing glasses. after i got the glasses and wore them consistently my headaches went away. try it!
i frequently get horrible headaches out of no where. when i get up in morning i always feel light headed nauseous. over the last two years i've been experiencing sudden awful headaches where my vision becomes blurry and no pain relievers or anything seem to help. my doctor said could be migranes but hasn't done anything to determine weather or not that is the case. any suggestions on other things to try to reduce this problem. or if i should seek different medical attention?