Hi Julie,
I usually had headache all the times before cancer, like migraine. It seems to me getting less after all the treatment.
It some times came to visit me, My thought was the mood and stress made myself headache, and sometimes the blood level not good. Blood flow not reaching and not "enough".
I hate medicine especailly after chemo and now with tamoxifen. So I was very resist of taking Panadol.
May I suggest you, try whatever way to relex yourself, even a good walk and good sweat, a good massage on head and neck.. will that be too long in front of the computer, maybe....maintain your iron level (should check with your GP) take iron tablets, or juice with spinach or beetroot or silverbeet.
If all these self adjustment still unable to work, you have to seek for Specialist for a detail checking.
Take care and Happy New Year
Rosanna