Please help !! Please help me ...

Hepatitis B is most commonly spread by exposure to blood or other body fluids such as through sexual contact. You can't spread it through casual contact such as touch. Kissing, hugging, and even breastfeeding are all safe (although I very much doubt you'll be kissing or breastfeeding anyone in a clinical environment). I don't know how it works in Australia, but as a US based RN I had to go through physicals for employment and for school to make sure I was immunized and that it was safe for both myself and the patients I would have contact with. You might want to talk to your doctor and whoever is responsible for compliance/health at your school about your condition and your goals so that they can give you the best guidance going forward.