both of my mc started out with red and then brown...
Quite possible, hit the emergency room, I had the same symptoms when I miscarried.
There are many woman who bleed during pregnancy. It does not always mean you will miscarry but should always be checked out. IT could be your progesterone is low which needs a blood test to find out if that is the case and an ultrasound is something you need to make sure the baby is in the uterus, has a heartbeat and there is no bleeding in or around the uterus. I had a subchorionic bleed but the baby was fine. I had to do bed and pelvic rest till it was gone though. Get checked soon and if you have any bleeding that is like a period got straight to the emergency room.