From what I know that means you had active Hep b at one time and your body fought it off on it's own, now you have the antibody and you cannot get it again. I can't see your attached photo but make sure you get a comprehensive liver panel to make sure you have recovered.
I know someone who this has happened to, they didn't call they doctor back after testing positive to get medicine but ttheir body recovered. He said he was tired constantly for 3 month, similar to mono.