my pregnancy with my son I had it took antibiotics for a week and they gave me some through iv when I was in labor my son was just fine and I also have it again this time and I have faith everything will be fine again :) so try not to stress too much about it
You'll have antibiotics at delivery in your IV, and as long as you have that your risks for anything happening is low. It's pretty common to have Group B Strep. I had it with my daughter. It's not really anything to stress too much about.