Am i in early labor?

Yesterday my husband and 2 year old daughter were rough housing on our bed before I took a nap with my daughter. I was laying on my side and she jumped on the side of my stomach. Didn’t hurt but I noticed I started getting painful contractions that were super close together for about an hour or 2 after it happened. I’m 37 + 3 days pregnant. I was at hospital for 4 hours because they were just checking everything and running tests since considered a “trauma” hit. Everything was fine but they checked my cervix twice while I was there. Was completely closed. Has sex with my husband later that night when got home and this morning my underwear felt soaked. Is this my water breaking or just super wet discharge?