Hi there...if the nail has come off partially, then it will need to be removed completely. Also if you haven't had tetanus vaccination in the last two years, then you can take one. Also since there's a lot of bleeding, there's a chance of secondary bacterial infection. So it better to take a course of antibiotics. Also just apply plain antibiotic cream like sodium fusidate or mupirocin for the wound. If you have pain then you can take an analgesic like paracetamol or diclofenac. And consult a general surgeon when possible for further examination of the wound.