From last 5 days I'm suffering from breathing stuck issue facing issue in deep breath taking many time felt it stuck and even breathless also feel many times a day ..it started 5 days before when I'm taking lunch...my spo2 99 pluse also under 100 ...bp also quite normal ...it start when I wake up most bother in when I'm taking fast bathing eating and some more activity ...even when I lie down in bed changing postion sometime cause symptoms...I felt left side little pain...ECG is normal sinus tycadgeia found ...I'm taking medicine but not helping...xray also normal ...what can cause it I don't know...kindly advise something...yawing whole day to accompany breath stuck...