I would like an idea of how bad i should be before i go to the ER. I have my first appointment with a pulmonologist Oct. 6. My PCP diagnosed me by my symptoms and chest Xrays. Tonight i am somewhat SOB with worse chest pressure, but my SATs are not low for me. 89 to 91. I get dizzy and the room spins around when i cough. It seems like several minutes, but i suspect it's less than a minute. I suspect i don't need the ER. But it got me thinking, how bad is too bad? Heart has been beating fast at times.... like 120 or so. I am most SOB when i get up to do something like work on the laundry or go to the bathroom , but i am better soon after i get back in my recliner.