I had my water break with baby #2 at 33 weeks, no known gbs status no contractions, 10 hours later contractions started, 12 hours later I was offered iv antibiotics and 14 hours later baby was born very sick with a gbs infections and in the nicu for 2 weeks.
with #3 my water broke 35 weeks, no known gbs status (previous experience) I got the antibiotics immediately contractions started on their own 20 hours later baby born healthy 4 hours later
#4 I ruptured at 36 weeks gbs- stayed home had no exams waited 40 hours for contractions to start on their own and had a phenomenal birth

My midwife told me that if there is no internal exam, no temp, and gbs- she is comfortable waiting a minimum of 72 hours for labor to start on its own (providing the baby is doing well) she cited some study done but I"m not sure where I could find it
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