At what point in labor do you go to the hospital?

Betty
I had a little scare yesterday so I went to the hospital to check on my LO. Thankfully all was well and I was discharged. While i was there, I asked the nurse their policies on labor & delivery. She told me if my water breaks, to come in right away. However if my labor starts with contractions, I have to wait until the contractions are 5 minutes apart for TWO HOURS and then go in, otherwise they will send me home. Is it just me or is that wierd? I mean TWO hours??? I was especially shocked because I'm Strep B positive and they said I should still wait and go in at the last minute. I thought I needed Antibiotics ASAP?? 😕 What are your thoughts on this ladies?