Leaking amniotic fluid and sent home?

Went into L&D around 10pm after leaking fluid since 9pm the night before. Had a decent size gush before we left for the hospital. Nitrozine strip came up positive for amniotic fluid, and sonogram showed not much fluid left and that I had a leak but I was sent home until contractions speed up???? Does anyone know why in the world they would do this??