I have been having the same problems. Are you on Remicade? I have been on it for about 4 years, the last two years on 4 week intervals. I had a CTscan of the brain and on to have an MRI next. I have been wondering if this is something from the Remicade.
I have been on remicade for about a year now, and I also have bad headaches. The day after is pretty bad for me. I take pain pills. I see a pain management doctor.