Do others not get a lot of headaches on caffeine? Yeah there's ones that come with going off caffeine, but the amount of headaches days I have a month plummets once off of the stuff.
That's either dehydration or withdrawal. Caffeine is a diuretic.
If you consume roughly the same amount of caffeine at the same time each day, and go out of your way to drink more water, caffeine use won't cause headaches.