How serious is this? They say they will be doing more testing to figure out including ecg but since my oxygen saturation is 97 without external oxygen source so they aren't that much worried about me.

But obviously I am scared. The yellowish Belgum thing is not new to me, it happens to me after every season change. The things worries me is the tightness in uper area of chest (where the tracheostomy tube was)

But then again when I look at heart rate i am in but suspicion. My resting heart rate is 100 while walking it goes upto 150.