First, please apply gentle pressure with a clean cloth to stop the bleeding, then wash the wound thoroughly with mild soap and water. For minor, clean cuts, applying an over-the-counter ointment containing bacitracin or polymyxin B can help prevent infection. However, you should not take oral antibiotics, such as cephalexin, without a doctor's prescription. If the wound is deep, caused by a dirty or rusty object, or shows signs of infection like increased redness, swelling, or warmth, please see a healthcare professional promptly. You may also need a tetanus booster.