I drink a lot of coffee too prior to pregnancy, can't last a day without taking one :).
During the first weeks of pregnancy, I took decaf if i have a strong craving for coffee.
Can be that your headache is a form of withdrawal from not having coffee for a couple of days since you said that you are abit addicted to it.
You can take panadol if the headache is really bad. You can also try applying cold compress. Me, I try to just rest and let me headache resolve on its own.
Take care!
Anonymous