I currently have white and red, ulcers/sores on the inside of my mouth. I started to notice the first couple a few days ago and they ve spread through my mouth since, including my tongue, cheeks, gums and tonsils(the tonsils are covered in them) My lymph nodes are swollen and it s hard to eat/talk unless I m sedated on ibeprofin. I ve been consistently rinsing my mouth with antiseptic and it helps, but only for a short time I also have a 100.5 degree fever, and I feel fatigued and somewhat drowsy.. Does this sound like common canker sores/cold sores/viral infection? I saw a doctor about this today and he didn t give me a real positive answer to what it was minus two tests, one for influenza and one for strep, which both came back negative. I feel as though I should be doing something different, since these things are spreading fairly rapidly. Any suggestions would be very appreciated!