Went to chiropractooday for an adjustment on my SI joint and also had an adjustment done to my neck. That was around 5:30. Now almost three hours later my head feels odd. Like very warm and I have the feeling of an onset headache.. slight blurriness to vision. Very stiff in the back of my head. Also a light feeling to y head. Sorry for the grammar. I'm posting from a phone and it's hard for me. Some insight would be great.