Hi mamas. I was admitted into the hospital the last 24 hours for preterm labor (34+6)

They treated me for GBS even though my test hadn’t come back yet. I did have it with my last two kids though. They gave me the steroids for baby’s lung development and discharged me when things stalled out at 4cm to let things progress at home. My question is have any of you had this experience and when it was time to go back did they retreat you for GBS again during labor again or did the rounds of penicillin take care of it?