I took 2 tramadol pills that weren't prescribed to me, for hip pain that I was suffering. They made me feel drunk for 48 hours, and since then, (1 week ago), I have had splitting headaches when I stretch, sneeze very hard, or orgasm. Once a headache occurs, I can take any number of pain relievers, but they never go away until after I sleep for a full night. What did I do to myself?