I second what tropicalkitty as said. You are drinking an over abundance of caffeine in a day, and when you just completely quit drinking caffeine, you're body goes into a fit, kind of like drugs, your body will go into a fit because it's addicted, and so you experience the headache. After a day or so, it will go away. If you can't take the pain, try some Excederine. It is a pain reliever, and it has small amounts of caffeine in it. You could also try drinking a diet soda, that also has caffeine, but isn't bad for you. You are allowed a certain number of sugar free caffinated drinks a day(diet soda) and 1 diet soda might be good for you if you're going into caffeine fits. Gradually wean yourself down from many cups to 1 or 2 cups a day, but no sugar! Which means no cappichino or anything, strictly coffee. Cappichinos have too much sugar in them! If you need sugar in your coffee, I think you can use splenda without too many side effects. Just dont pour the whole bag in
1 or 2 tablespoons max. I dont remember the exact specifications of the SBD, i've been off for liek 2 weeks haha I've cheated SO bad! And I've decided to just start calorie counting and exercising, that way I can still eat what I want to eat.
Stick to your diet! You really will see results!
Good luck hon!.