Brown discharge at W33+

Hi ladies, first time mom here and I’m currently week 33+ and I got a scare when I woke up this morning with some brown discharge. I called gynae and was asked to monitor and rest. Does anyone have this experience? Am so worried that baby is coming out soon. Besides some constipation which doc said might cause the strain, I don’t have any other symptoms. Appreciate any sharing to ease my anxiety! Thanks.