I had a same day surgery today and I believe they used MAC anesthesia (no ventilator), at least that was the plan. I awoke with a somewhat sore throat plus allot of congestion, and began coughing up bright yellow mucus into tissues (so the nurse did not comment on the color). Now a nurse friend says I probably have some kind of infection, but I have no other symptoms. Also, breathing has improved much over the last several hours. Should I follow up with my doctor?