I Woke Up This Morning And Had A White Pasty

I woke up this morning and had a white pasty foam on my lips. Underneath the foam was a thick pasty white line of thick, almost glue like paste that I had to remove with my tooth brush.
Why did this happen? I have HLA-B27 Antigen and I tested positive for Ankylosing Spondylitis, 3 years ago. I also was diagnosed with Fibromyalgia.

Currently, I'am taking Morphine 15mg 3X per day. I'am on Oxycodone-Acetaminophen 7.5 mg X 3 to 4 pills daily, Celebrex 200mg X 2 daily, Lyrics 150mg X 3 daily, Prednisone 5 to 7.5 daily, Sulfasalazine Dr 500mg X 6 per day, Minipress 5mg X 4 daily, Amlodipine Besylate 10 mg 1 daily, Klonopin 0.5mg X 4 daily, Belviq 10mg 1 daily, Fluoxetine 20mg 1 daily, Pantoprazole Sodium 1 daily, Tamsulosin 0.4mg 2 daily, Cialis 20mg 1 pill as needed, Amphetamine-Dextroamphetamine 20mg X 2 daily.