I've noticed my SPO2 levels are usually around 92-94, especially after swimming, even if it's late in the evening. I have sleep apnea and I'm using the Foracort 200 inhaler twice a day. I used to have wheezing problems, but thankfully, that's not an issue anymore. Should I be worried about my oxygen levels getting worse because of sleep apnea? Is it normal for someone with this condition to have lower SPO2, and how much of a concern is this?