Brown discharge and Acid reflux

I've never had any discharge that wasn't just a normal clear or slightly white. Two weeks before the start of my period I had discharge that was dark red and brown. I mistook it for an irregular period but the day after, nothing else happened. I keep getting just a little bit of brown discharge mixed in with the white/clear. also, I'm not sure if this is linked to the discharge, but the last 5 days during every full meal that I've eaten I've gotten hiccups, and then immediately following, acid reflux. I've never had this problem before and it could just be a slight change in quantity of food or diet but I thought I'd ask.