Hi i have a white sore on above my back tooth on top of my gum can anyone help me

[cruzadrianag]

I have been eating nut bars and had a feeling it caused irritation to my gum cause they were hard bars. also, i flossed the other day and ate a chocholate nut bar before bed without brushing my teeth. does anyone have an idea what this is if it will go away and if I should be worried thank you so much god bless

 

[NA12]

Looks pretty similar to a mouth ulcer. Those aren't that serious and usually go away on their own.