Low Oxygen with activity

[Nessaleah]

My blood oxygen levels drop to 85% when I walk around and will drop as low as 73% when I’m playing with my dogs (throwing a ball, chasing them a bit). I am experiencing very severe symptoms of low oxygen (severe shortness of breath, dizziness, nausea, mental confusion, extreme exhaustion, irritability, and rapid heart rate). I was referred to a pulmonologist and he did some testing and diagnosed me as “fat.” When I asked for an assessment to see if I qualify for oxygen therapy, he was very resistant and brushed me off telling me I need to lose weight. I do need to lose weight but I find it impossible to carry out my basic daily activities. I would love to exercise but I can barely get dressed in the morning. By the end of my work day, I’m extremely exhausted. I feel like I’m not getting the care I need because I’m overweight. If the data shows that my oxygen levels are low and I have symptoms that are consistent with that, why am I less deserving of oxygen than a COPD patient? If I had COPD and my oxygen levels were that low there would be no argument regarding the need for supplemental oxygen. Am I wrong?