Heal cuts that are contained by your mouth?

I got a cut from flossing yesterday. After i flossed, i put on Crest Whitestrips, and it started to sting my gums. This morning i brusted my teeth, and it stung some more. Just very soon i brushed my teeth, and it still stung. I need to put on Crest Whitestrips following, but i can't because the pain i feel yesterday was merciless.
How can i heal cuts that are contained by my mouth? Gargle salt sea?Heal cuts that are contained by your mouth?
I've cut my gums with floss too. I simply rinced my mouth with hose and It stoped. If its big enough, later salt hose should do the trick. Good luck :)
They have tablets for canker sores that helps. Try gargle with peroxide.
THINKS HEAL RELATIVELY FAST IN THE MOUTH.
REMEMBER BITING YOUR TONGUE OR LIP?
IN A FEW DAYS ALL WILL BE WELL. BE GENTLE WHEN YOU FLOSS NEXT TIME.

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