Anybody having loose stools?

I'm 37+5 and have been having loose stools all day. Normally I'm either constipated or just regular. I drink a lot of alkaline water so it helps keep me regular with all the prenatals. Wondering if this smcould be a sign of my body starting to prep for labor soon? I also lost weight at my last visit. I know that both of those can be a sign of labor being soon. Anybody else having it too?