I just started using like a week ago not smoking meth just snorting it ive only done it three times one being yesterday im still coming down i noticed i have a long stripe like sore on my mouth going into part of my throat its extremely painful and i was wondering if it was the meth or if i may be allergic to it. The last time i used the same thing happened but was small and went away after i brushed my teeth i tried that but im still in so much pain i have plans on quitting meth but am tempted to use it again to get rid of my pain.