Yes, definitely. Having your hair up can contribute to headaches. I suffer from migraines....when I have one, I can't have my hair up at all. Try taking some Excedrin migraine, drink something with caffeine, and put some ice on your head. If you continue to have these headaches, you should mention it to your doctor. You might also start keeping a log of your headaches, like time of day, day of the month, foods you've eaten, and any symptoms associated with your headache.