Hi, I m 21, 5 3 3/4 , I ve been on antibiotics for 8 days cause i was sick with chest, nose congestiong and really bad sore throat. This morning I have been blowing neon yellow mucus from my right nostril. What does this mean? I also have acid reflux and recently found out I have pancreatic cysts. My doctor said they weren t something to worry about, but I don t believe him.