Hi. If the tests were negative at that time there are chances you were in window period... however the PCR test that you have written tests the viral load
and if no virus was found in your body then...unlikely it if found now. Yes many people who are HbsAg positive do not have any problems.. however in your case it seems unlikely you are HbsAg positive (from what you have mentioned). Having said that a repeat screening now would do no harm.. have yourself tested for Hep B and C.