I feel for you! I was on Effexor too. I quit taking it because it made me so oblivious to bad feelings - While I was on it, I just didn't care what else was bothering me. My pain didn't really go away with effexor - it just made me not care that I was in pain. If I forgot to take it for a day or two, I would have severe migraines. I forgot to take it several times. I just got so tired or those mini withdrawals that I just decided to quit it all at once.
I have to tell you - this is the best deceision I have ever made. It is also the most difficult drug to come off of. You will be so glad when you're off of it.