Brown spotting and mixture of symptoms at 6 weeks?

Is it normal to have brown spotting at 6 weeks? I’ve had it for a few days now. It all started with a gush of red blood a few days ago and has since been light and brown. No cramping, breasts still a bit sore, extremely thirsty and tired, and had a wave of nausea this morning. I spoke to my doctor when this all started and he wasn’t too concerned but I’m going to see him in a couple of days to make sure. Does this sound like a miscarriage or do you think everything will be ok? Curious if anyone else has had these things occur.