Hai Doctor,I'm Saritha,32 Years Old.i Have One Daughter 4 Years

Hai doctor,I'm saritha,32 years old.i have one daughter 4 years old.nw I'm pregnant 5 months. My blood group o negative.my husband group a positive.i took anti d inj soon after my first delivery.bcoz my daughter group a positive also.today I did coomb test it shows positive.titre not done.as per doctor doctor order I took inj anti d 300mcg.so wat is d next step?wat should I do?any complicatication for my pregnancy?