oximeter normal range - #17392

I recently bought a pulse oximeter to monitor my oxygen levels at home, especially because I’ve been feeling a little short of breath lately. I know that an oximeter can measure the oxygen saturation in your blood, but I’m not entirely sure what the normal range should be or what it means if my readings fall outside of that range. From my research, I understand that a healthy oxygen level should be between 95% and 100%, but I’m not sure how concerned I should be if my levels are lower than that, especially if I’m not feeling any severe symptoms. I’ve noticed that my readings sometimes dip to 92% or 93%, especially after exertion, but they go back up after a little rest. Should I be worried about this? Does it mean I have an underlying lung or heart condition, or is it normal for some people to have slightly lower oxygen levels at rest or during physical activity? If my oxygen levels fall below 90%, should I seek immediate medical help, or is it something I can manage with lifestyle changes, like improving my fitness and quitting smoking (if applicable)? I’m generally healthy, but I’ve been noticing some fatigue and mild shortness of breath recently. Also, are there certain factors, like age or altitude, that can affect the oximeter normal range? If I’m at a higher altitude, should I expect my oxygen levels to be lower than normal? I’ve heard that certain conditions, like asthma or COPD, can also cause lower oxygen levels, so I’m wondering if I should get checked for any of those. Has anyone here used a pulse oximeter regularly? What were your normal readings, and when did you seek medical help for low oxygen levels?