Was getting better until yesterday. Have been using saline nasal spray every 2-3 hours. Keeping my nose clean and crust free. Was told not to blow my nose. Unrelieved severe congestion making it hard to breathe started last night. Nothing helped. I feel like I have a sinus infection now. Sinuses burn coughing up yellow mucous which was previously clear or bloody. Did blow two large clots from right nostril but still congested on the left. What else can I do?