ok, I have these sores in my mouth on the sides of my tonge, the tip of my tongue, under my tongue, between my gums, all the way back to my throat and even on the little thingy that hangs down. Needless to say in a lot of pain. I have also been having serious low back pain and abdominal pain on the right side and fatigue. I have had the mouth issues for approx a month which have just been getting worse and the back and abd pain have started over the past two weeks. What is going on?