Brown discharge

I was confined last 2 weeks due to pre term labor at 19 weeks, may red spotting kasi ako. With 3 days dextrose na okay naman ako at si baby and advised for complete bedrest, continue medication of duphaston and duvadilan 3xa day . Mag follow up together pre natal check up after 2 weeks which is this coming sat. But I noticed na naman may brown discharge ako, may takot na kasi ako sa discharge or spotting (brown ). May naka experience ba dito na brown spotting? is it normal lng ba mga momsh?