I understand your dilemma. I have a friend who suffered a severe TBI just as he was starting college and took 10 years to finish college. He ended up with a masters degree in counseling. He still lives with cognitive issues, insomnia and other TBI symptoms such as intolerance for over-stimulation.
Have you ever looked into whether Botox can help with your head aches ?
I encourage you to check out this web site. It has great information for friends and family.
http://www.brainline.org/content/201...u-to-know.html You could even print it out so others can read it.
You may find a Vocational Rehabilitation counselor can help you find a direction to go career wise. Someone who can help you inventory your skill sets may be a big help. Check to see if your state has a Voc Rehab program.
What kind of a degree are your pursuing ?