My last appointment with my Physical Therapist she did the gentle stretching massage for a half an hour and more areas of my body than she usually does. (I was getting to a point where I would only have pain for a day afterwards). Mine was delayed for 2 days also and then came the bad pain. So you are not alone with the delayed pain. I know how you feel and it is not good. It will get better and go away but it may take a few more days.