12 weeks pregnancy

Rh antibodies are harmless until the mother's second or later pregnancies. If she is ever carrying another Rh-positive child, her Rh antibodies will recognize the Rh proteins on the surface of the baby's blood cells as foreign. Her antibodies will pass into the baby's bloodstream and attack those cells.

May positive at negative kasi na RH and usually sa ibang bansa ang may negative.. Mahirap pag magkaiba kayo ni baby ng RH lalo na kung ang mother ang negative tos magcross placenta yan tapos si baby ang RH positive Wag mo problemahin yan mii normal lang yan RH(+) bloodtype mo A(+) tawag dyan

If sure ka na Type A ka, and Rh positive ang result ng test mo, that means your blood type is A-positive (A-plus).