The tubing is what is causing your pain. It is rubbing up against your phrenic nerve which serves all the organs in your peritoneum. This happened to me, and it was there for 9 months before NSG finally admitted that it was causing the pain and shortened it. Unfortunately, because it was wrapped around my diaphragm for so long, I have lasting nerve damage and from time to time it feels like it is still wrapped. Do you also have pain in your collarbone area? This is called referred pain and it is also from the tubing.