Woke up with wet underwear....

Amanda 👨‍👩‍👧‍👦 • 27. Mom of two.Married. Dacien&Delaney 💙💖
I'm 37w6d. I had a dr appt yesterday and had an exam done. 
This morning when I woke up my underwear was really wet, I looked at them and didn't see any visible discharge and it doesn't really smell like urine. I'm wondering if maybe my water is leaking or if it's just discharge from having an exam yesterday. Anyone have any ideas? Or have something similar happen?