i have gastritus...i was just diagnosed with a sinus infection...while i have pressure in my chest and back, the dr. told me numerous times it's from my gastritus...but...i've been taking my mucinex, my zpack, and my nexium and the mucas has been breaking up quite well, my chest hurts as well as my back, and i'm coughing up pink phlem...the dr has assured me that it's normal, but i'm freaking out and i think i'm going to die...i am a 30/f..i am a smoker...please help.