My son fell and bit his lip it s a pretty good cut but it s on the inside of his upper lip , this is the second time he s done this. It s already swollen, but it s stopped bleeding , his teeth aren t loose or chipped. I moved them and he said they didn t hurt, the last time he bit his lip we took him in and they strapped him down and it took 5 of us to hold him down while the Dr put stitches in, he screamed and cried and it broke my heart . Is it true that cuts in the mouth heal just fine on it s own? is it bad that I don t want to put him thru that again?