Hmmm - I thought maybe I was having sinus problems, even though none of the congestion is there... I am having headaches too.
Today I am going to try to up the protein and lower the sugar (I have a terrible tendency to eat Jell-o puddings, even if they are only 100 calories!) and see if that helps.
Make sure you aren't taking in too much sodium, and drink as much water as you can stand - might help? I'm no doctor... what does everyone else think?
Might just be your body adjusting and even having withdrawl from varying foods you aren't eating?
Are you still having the same amount of caffeine as usual? If I cut that back, my head POUNDS.
Good luck!
Heather