Should I call L&D?

35+2 was sitting on the couch watching tv with my boyfriend and all of the sudden I felt really, really wet. It wasn’t a gush or anything, but when I went to the bathroom to check things out my underwear and the crotch of my leggings were soaked. I changed my underwear and put a pad on to see if it happens again. My lower back is starting to ache. Should I give L&D; a call?