Water break or mucus plug?

I’m 38+2 and at my appt yesterday I was 1 cm dilated. For the past few days I’ve slowly been losing my mucus plug. I mean very slowly. However, this morning after 15 minutes of being up and about I got really wet down there. Maybe 1/4 of a cup of liquid at most. There was a little bit of jelly consistency, but it was mostly just wet. I had mild pain when it happened. Was this my water or mucus plug? I’m only in mild pain rn.