I am going through the very same thing sometimes brown and red and some cramping I had an internal u/s Monday and they said everything was fine to come back next week its now Thursday and iv black stringy discharge clots and strong cramps
Brown blood is old blood.common to spot early pregnancy. There isn't much anyone can do if you start to miscarry and that is why an er would just send you home. But they should have given you more info. Unless it turns briht ted or you start cramping you are probably fine. Good luck
What do you mean you went to the ER and they didn't give you a diagnosis? Could be implantation bleeding. As long as you are not cramping/bleeding, it should be ok. Please contact your doctor.