Has anyone had a sweep done when group b strep positive?

I had a sweep done today at 37+3(already showing signs of very start of labour) I asked my ob if it would introduce the GBS into the uterus she said no and it's not a risk to baby until waters break . I went ahead with sweep however I've done some googling and it seems it can put baby at risk. I've been crying and worrying. Any one have any experience or advice? Thanks

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