I didn't know I was in labor..

Last Sunday I gave birth to my son, I was cleaning the house, and I bent down to pick something up and when I stood up I felt a gush of water. Assuming my water broke we went into labor and delivery. But I felt nothing so I was wondering if i had just peed on myself accidentally. When the nurse checked me for amniotic fluid the test came out negative to indeed It was just pee. Before they discharged me they did a vaginal sweep just to rule out that I wasnt ln labor. To everyone's surprise I was 7 cm dialated and contracting every 10-15 min, i had peed on myself bc he was so low. I didn't feel a thing. So they admitted me in and 6 hours later I was holding my little one.