Many years ago in my recovery I experienced feeling incredibly angry for around 6 months. I'm not typically someone who experiences much anger so it was quite uncomfortable for me. It was about realizing how mistreated I was by my family. After 6 months I was wondering when the anger would go away. I think it did start to lessen after that as I kept turning it over to my higher power. It did thankfully go away eventually. So I think you will move past this in time. I don't know if there are any tricks your T can teach you to discharge it but it can't hurt to talk to T about it. It can be possible to get stuck in the pain but only you and T would know if that is the case. It may be you are just smack in the middle of grieving.
I also remember reading a passage from some book where they made a distinction between pain and suffering. They said that pain is from an actual emotional injury whereas suffering was more like being stuck in some unhealthy coping method that is causing us misery e.g. like drinking, self-harm or even the hopelessness of depression. Not sure if I'm explaining that all that well but trying to say if the pain is about grieving your past it is probably productive whereas if it is more from self-destructive tendencies then it may not be. For some on this board getting stuck in the transference is quite painful and shifting the focus onto what is causing the transference can help move to a more productive place.
So I think it can be helpful to look at what the pain is about to see what type it is (pain or suffering) to see if it is productive or not. Also if we're processing it (moving through it) or getting stuck in it. Either way I hope you are feeling better soon.