Pop sound with little fluid and back pain

Brook
Tonight I took my 7 year old to a movie during the movie I felt something like a bubble pop and at first I thought I had wet my pants.  It was not much maybe an ounce.  Now 2 hours later I am having lower back and cervix pain.  Is this labor?  I was induced with my son now I am just not sure.  No contractions just steady pressure like pain.