Hi - I am on Effexor too - but only 75 mg daily. I have been on it about a year and intend to stay on it forever! I think if you have been on Effexor for six to seven years, it is going to take a while for your body to adjust to being without it. In my very humble opinion, I think your two weeks, two weeks, two weeks withdrawal was very quick to come off this powerful drug. It may be helpful to go back onto 37.5 mg for a little while but if that means you have to go through what you have already gone through, you may prefer to stick it out. I have read that taking Prozac for the last bit of withdrawal can help enormously.
I have great admiration for what you have achieved so far. HW will help you through the bad times too. Take care.