Kill Kill Kill

Ok...short post.... in the morning i may well be done for murder, went to dentist (who never explains anything) today and he started root canal treatment,....and never even gave me a bloody painkiller... i have been in total agony all evening.... think head is going to burst...on top of this i have a bad cold.... am wondering how many paracetemol you need to get OD'ed... if i get through this night the dentist may die....