For many years I have suffered from headaches. For the last 30 years I would probably suffer 6 headaches a month especially premenstrually. The headaches were really bad when I was on the mini pill which is progesterone. Also they were bad in the 1st trimester of my pregnancies. Now that I have reached menopause they seem to be getting a lot less frequent. Does anyone know the reason for this? Could it be something to do with progesterone levels dropping?