One thing I have learned, especially with pain, but also other symptoms, is to not fight the symptom. If you are experiencing pain, tensing up against it, does not help, it only makes it worse. If you can completely allow the pain, accept it with your whole being, not only will you feel better, but you may have a breakthrough in your healing.
There are several things you can try, to allow the symptom in.
Close your eyes and bring your awareness to the area that has pain or another symptom. As you breathe in imagine the breath going to that area. As you breathe out allow that area to soften. On the inhale you can also try breathing in light or warmth.
Imagine that your resistance is a fist held tightly around the symptom. Feel the fist and slowly let go. This can be combined with the previous point.
Just explore the sensations. When you get curious about pain, it’s quality changes dramatically.
Practice surrender. I am not sure how else to put it, but sometimes, when in intense pain, I just keep surrendering to it.
I have a food allergy, and one of my reactions is that my esophagus goes into spasm. It is incredibly painful and I can’t swallow for about half an hour. I have never felt pain as bad as that. One time when that happened I practice surrender and exploring the sensations, together. It was an almost ecstatic experience. The pain went away very quickly, but I almost wished it didn’t because I was enjoying it so much. I have never had that pain, so intensely, since that experience.