Sir since last 6 days se I have a back pain. When I went to doctor he told me that I have a slip disk first stage i.e nas per nas cher jana he told me for complete bed rest for 10 days but there is not much development I am suffering still tha same I am doing the sek of hot water i.e putting some hot water in a plastic bag like thing applying it on my back where it is hurting can you suggest me that whether I should use hot water or cold water please kindly advice your suggestion thank you.