Am I going to have baby early???

So, I went to l&d tonight because I thought I was leaking amniotic fluid due to a trickle of fluid I felt followed by two separate trips to the bathroom with little white flakes in the toilet..... at the end of my visit, the nurse tells me the test for fluid is negative, but makes the statement, " We are a little early, so I'm gonna give you this steroid to help develop baby's lungs and you'll have to come back in 24 hours to get a second dose." I feel like I have to pee constantly and have peed four times in an hour-ish.....and all times have had little flakes. What do ya'll think they will do when I check back in tomorrow night?