Has anyone had a small leak but nothing to follow?

St

Yesterday when my daughter was at preschool I stripped down to nothing and cozied up in my bed for a short nap. After I woke up I was just laying there looking at my phone and felt a small gush of water from down below. There was a 3in wet spot on my sheets, couldn’t tell the color because my sheets are a salmon color, but it didn’t smell like urine and I definitely felt it come from my vagina. I put a pad on, but didn’t have any other leakage. Has this happened to anyone before?!