I've been having some issues with mucous and chest congestion lately. There's this white, jelly-like, and sometimes fibrous mucous coming from my lungs, and my chest gets tight around the left lower rib or in the center. Coughing it up usually helps with the tightness, but it's becoming concerning. Also, I wake up with bad breath and some upper back pain below my shoulders. I don't have a fever or breathing problems, but I'm dealing with acidity, heartburn, and flatulence. I'm wondering if these symptoms are connected and what I should do about them? Any advice would be appreciated.