I am early on in my pregnancy, haven't yet seen a heart beat, we go Wednesday for another ultrasound, I have been spotting brown blood for the last couple days nothing serious, today it was a bit more than it has been and is now more on the red side, there was also small brown clotting. I've read ok and bad things about this. Is this cause for concern or is this something normal at about the 6 week mark? I haven't had any cramping just a little nausea.