Brown discharge at 6 weeks pregnancy

Hi, I am 6 weeks and few days pregnant and I see brownish discharge on and off when I go to restroom. No bleeding but just the discharge. No heavy cramps and no pain but just minor abdominal cramps on and off. Is this normal? Anyone has experienced this? Share your experiences please. I had a scan day before yesterday and baby was fine and had a heartbeat. Doctor even gave me Duphston but I still see mild brown discharge on and off. Is it normal ? #1stimemom #advicepls #pregnancy