For the past two days, I have been experiencing upper left-sided pain when taking a deep breath, which causes shortness of breath and radiates to my left shoulder. The pain becomes significantly worse at night and improves in the morning. Additionally, I am experiencing ongoing gastric issues: my stool is discolored, always floats, and sometimes has visible particles in it (I suspect worms). I also have acne. Given this combination of severe nighttime breathing/shoulder pain and digestive issues, is this an emergency, and should I consult a General Physician or a Gastroenterologist first?