Tick borne diseases can cause chronic headaches, fatigue, digestive issues, and even skin issues in some people. It's a bit of a long shot, but it might be worth checking out, especially if you have been exposed to ticks or saw a red rash shortly before symptoms started.
http://www.ilads.org/lyme_disease/B_guidelines_12_17_08.pdf
get checked for anemia, mono, and hypothyroidism. Also see a chiropractor to see if your out of alignment
have you been under a lot of stress! sometimes stress can have alot of effects on your body and you might not even notice it!
HELLO THERE, ARE you taking any medications for your condition?..if so, these symptoms can be secondary effects from the medication possibly....
If you dont take any meds, then you need to see a dr for the symptoms you describe above....
it could be just about anything since the symptoms dont just target an specific place...
if these persists, after 2 weeks, do seek medical attention...just for prevention and peace of mind..
Take care..
Gathica