The at-home treatments shared earlier are just that — at-home treatments. If your bite was due to major trauma or a sports-related injury and heavy bleeding and pain are present, you should immediately seek medical treatment. Sutures or stitches may be necessary for healing. A procedure like that should only be done by a trained dental professional and not in the comfort of your own home.
Chances are, your cut is minor, and you can heal your bitten tongue with a few of the tips mentioned above. If you cannot manage the pain, bleeding, or infection, see a dental professional for treatment. They can help you make sure your tongue biting bites the dust.