Disharge question (TMI!)

I am 37 weeks today. I know lots of variations in discharge is normal and am not concerned. I don't get mucus when I wipe but end of the day in the liner it is a dark yellow or brown colour.. Dry when I wipe though? Not overnight either. Not sure if I should be clearer with my ob, she said If keeps coming will schedule my c section (πŸ˜”πŸ˜” breech) for 38 instead of 39. Cpuld it be a sign of labor coming soon?