It sounds like it is time to go inpatient. You are a severe danger to yourself if you are doing this kind of physical damage to your body and not seeking immediate treatment for stitches and prevention of infection. You could be inflicting permanent damage to nerves, muscle, and other tissues. You've got to impress on your doctors exactly how severe this is because you may not be intending to kill yourself, but you could very well end up doing so with the level of damage you are doing.