Hi honey
Just wanted to give you my experience with bleeding.
I'm 6 weeks pregnant today and yesterday started spotting. At first it was dark red blood (not quite fresh but not brown either) and later it changed to brown. Today it's been very thick and sludgy, not pleasant stuff at all. But I have some good news because had an u/s today and saw little one with heartbeat, everything as it should be for 6 weeks!!!
Many women have bleeding that is from an irritated cervix and has absolutely nothing to do with the pregnancy. Some women get bleeding that's almost period like, and still go on to have healthy babies.
With my first preg (mmc) I had no bleeding, just some spotting that was from a cervical polyp, not from my uterus.
Hang in there and honestly try not to worry too much (I very well know that's a tall order). Did you have sex recently or have a vaginal exam? Those are also 2 very common causes for minor spotting.
Best of luck!!