If Husband and wife blood gp are different and abortion occured then you should give injection Anti D 150micro Gm after each abortion in first three months abortion because we dont know the Bl gp of diverting fetus. If it reached full term preg then after delivery we check Bl gp of baby and if baby is positive we give 350micro Gm of Anti D so in next preg RH is imunization will not ocour. Now if you had not given anti d Inj then when you get
pregnant then go for Anti body times test and give two injection of Anti D, one in 4monthsand other in 8monthand do according to your gynae