Fluid leaking after peeing?

Ok this has not happened to me before... I went to the bathroom then I went to wash my hands and while I was washing, I felt a continuous trickle coming out. It wouldn't stop so I went back to the toilet and a little more came out. It was clear. Then I heard a "gloop" fall in the toilet. I looked in the toilet and saw nothing. I don't know if it sank all the way to the bottom of the toilet or what! I wiped and nothing was on the toilet paper. Has anybody gone through this? I honestly don't know if it was pee or what