I had 1/2 of my right upper lobe removed, resected, and about 6 lymph nodes. All done robotic. The cancer was removed . Surgery was about 4-5 hrs. . I awoke from anesthesia in horrible pain . I was sent home 4 hours later after chest tube was removed. (My surgeon said he found patients did better if they went home after surgery. The only pain med I was sent home with was tramadol and hydrocodone. 5 days later, I ended up in the ER. I couldn’t walk from one room to the other without giving out and short of breath . O2 level dropped to 74 while taking a shower or walking as advised by my surgeon. Smaller hospital sent me by ambulance to the large teaching hospital. I spent 5 days in the hospital , on oxygen, 24/7. U entered the hospital for my surgery with O2 levels of 95-98 on average . I wasn’t able to shower without oxygen and I was in panic mode while doing so. A resident came into my room late at night and said he thought I was having anxiety. Fast toward , 3 weeks later , my follow-up with my pulmonologist , he prescribed Xanax . I was in his office attached to my oxygen tank, crying my eyes out. After my second dose, I could actually breathe without oxygen. Diagnosis was that my pain was not controlled , so I wasn’t breathing as I should have which caused my shortness of breath. Whether that is true or not , I still don’t know. It has been 16 weeks since my surgery and I’m so fatigued, I do nothing . I do not take pain meds unless I’m miserable and I still have sharp pains in my chest. If your surgeon says you will go home a few hours after surgery , find another surgeon !