hepatits b

hi i did blood test to hep b and the results were : HBe antigen -negative Anti HBe -negative Anti HBc IgG -negative Anti HBc IgM -negative HBs antigen - POSITIVE Anti HBs - 1000 miu what dose it mean? i did blood test to hep. b. on january 2002 and then i had HBs antigen NEGATIVE ALSO I HAD A VACCIN TO HEP. B. LAST YEAR!!!!! besides all that i'm secont mounth pregnant. how will this results affect the pregnancy? you can write mw back in hebraw. THANKS