You were probably vaccinated against Hepatitis B, if you were immunised in accordance with the immunisation guidelines, and did not miss any dose. You should check your personal immunisation record to confirm this.
Next Steps
If you check your specific antibodies against Hepatitis B virus you will know if you are immune.
Health Tips
if your blood report shows absence of these specific antibodies, and you are not Hep. B sAg positive then you should get yourself vaccinated against Hep B immediately