OCD patients think that things they do is the right way and insist other to do things their way its a psycholigical problem and surgery is not required for this few drugs are helpful with counselling of the patient......
I also have similar kind of problem on long back. I easily come out of that OCD by insisting my mind by telling not to think about the completed action. So try this and u will definitely come out of this situation with in short period.
fluoxatine is a good medicine provided that correct doses. consult your doctor for correct doses or change of drug. Surgery is not required how ever correct doses and correct medicine is required if one is not working. Also keep in mind that OCD treatment usually takes many months to get treated.