I feeling shortness breathing last one month but when I check oxygen in pulse oximeter it show 100% after one week it still feel shortness breathing so I does ECG and x-ray both are came normal. Am a somatization disorder patients so many time I feel anxiety so my question is that is 100% saturation is good or bad because some doctor told the oxygen saturation is normal in 96 to 90 so can above saturation is indicated any disease bdw nasal congestion should continuing from 2 month ago it's still not cured doctor told it's may be allergies rhinitis so i don't know my oxygen saturation is perfect or indicated any disease ???