Apply the period pad or tampon externally on a wound and apply pressure. The pressure controls the bleeding, the pad or tampon is a clean surface to not promote infection. It would be a temporary solution of course but that’s what first aid is. Probably not a great idea to insert anything like that in a puncture or bullet wound because I assume you want the flesh to come back together and don’t want to cause more damage pulling it out. Even removing a tampon when your period was too light to soak it can be painful and cause microtearing.