Maddie
Clusters tend to come and go not give constant pain for days. If this all started after the tooth was removed and not before I would have this looked into, you could be dealing with something else. People have reported oxygen not working as well as it once did in the past. I find this happening to me but it is due to me getting lazy with my breathing tech. you can try downing a energy drink on the way to the oxygen tank to help but if your blood pressure is high that might not be a great idea. I would get checked out by a doctor and rule out anything else that may be causing the pain and rise in blood pressure.