Extreme debilitating daily headaches 24/7 after septoplasty and subcutaneous resection, why?

I had surgery approx. eight months ago and I have been experiencing debilitating pressure pains and burning sensations in my head ever since. I had an MRI of the brain done about 3 months ago which indicated migraine. These pains are chronic, daily, prevent me from sleeping, and wake me up out of my sleep. This is most definitely surgery related as I never had this before and didn't begin until after surgery. What exactly could cause this and how can it be fixed? My surgeon is not helping.