Pencil Eraser Sized Bump On Inside Cheek Area Adjacent With

Pencil eraser sized bump on inside cheek area adjacent with upper teeth. It feels soft to the touch and appears mainly soft pink to red in color. Wasnt noticeable until yesterday but now I am thinking it may have been here much longer. No pain or discomfort outside of me now knowing it is there. Does not inhibit chewing or swallowing. Mainly it just freaks me out. What is it and how do i treat?