I feel like I can't breath, and always need to yawn.
Lately, I have been feeling like I can't catch my breath even when I'm just sitting. It feels as if I need to yawn, start to, but don't get a complete yawn to satisfy me. I can't explain it any better then that, but it's miserable and i just feel like I can't breath. I have the tightness in my chest too. I'm about to turn 50, and have low blood pressure, and low cholesterol. Any ideas?