Tmi (no pics!) 37+5 weeks, loose green stools

hey ladies, as the title suggests I'm almost 38 weeks and I've been having a lot of loose stools that are green. it feels almost like diarrhea except sometimes not much comes out, but I'm constantly going to the bathroom. ive been having loose stools for over a week but only the past few days it has been green. is this cause for concern?

my diet has not changed and I do not have more iron than usual.

thanks in advance xx