Went to the pulmonologist today. I told her that my breathing is getting worse. She said that they have tried everything possible that can help me to no avail. They don't know why it's getting worse or what is causing it. So, since the cardiologist and pulmonary doctor have no idea what is wrong, I sure don't. What's worse is when the doctor tells them that during my last pulmonary function test my O2 stats never dropped below 87%, the insurance company will take my oxygen from me. For the first time in my 64 years, I' am at a loss for what to do.