Brownish Stains/small brownish discharge

Been to my OB and currently 5weeks palng and gestational sac palng ang nakita s TVS .. balik after 2 weeks para makita f may heartbeat n ang baby.. normal po ba n magkroom ng brownish small discharge .. as in super konti lang and wala namang pananakit s puson .. Niresetahan ndn aq ng PROGeSTERONE ng Ob q . Normal ba ito??