Been throwing up phlegm a lot lately mixed with bits of food that hasn't digested properly & I have severe pain in my chest as if I'm congested. I'm 18, 165 lbs & have asthma, but it recently started bothering me more & more. My heart begins to beat fast at night & I started having anxiety problems and feeling as though I couldn't breathe. I drunk a hot cup of tea lastnight & I coughed up a brownish looking mucus & I felt better for the night but this morning right back to the same thing. Any help ?