During the treatment, pain may be produced but it has to be tolerable at all times. Clients usually feel pain a day or two after a treatment session, possibly due to mobilizations or other maneuvers used. However, pain generally subsides after a while. Just like the market, pain can fluctuate quite a lot but just focus on the long run. (i.e.: if you feel pain two days after a session but on the third day, you gain 30% more range & pain actually goes back down, then the trend is positive)
Just have more faith in your healthcare provider and communicate your findings so he or she can make adjustments accordingly. Proper communication is the key to fast rehabilitation! We are all unique individuals and our bodies respond differently. It may sometimes not be a bad thing to experience a little more pain after physiotherapy since it might provide us with a better idea of what is going on. Again, the body likes to play tricks on us all and it is by carefully examining the way it responds to the treatment that we can better understand what it is trying to tell us.