Share 'bottom 4 teeth burn

Ok this is just odd: i am brushing my teeth at night and the next morning my 4 front teeth feel as if some burned my gum line with a torch lighter and it wont go away. Dentist is closed . i brush and floss me teeth every day and after i eat. this helps for about 1 hour but then 1 hr later they burn like the torch lighter . I have no idea what this is and is there some thing i can get to put on ...