Well I think its good that you are going over to the ER. I hope everything goes well!!
I had alot of spotting with my last pregnancy starting at 5weeks and it didnt end up until the last month of pregnancy.. At 13 weeks I even had one episode with bright red bleeding enough to wear a pad, but amazingly enough when we had the u/s she was still in there moving around!! Sometimes bleeding is mysterious, so everything can be fine with this spotting.. For me some of it was unexplained and some was due to a cervical polyp.. GOOD LUCK hun!!
~*Candice*~ Wife, Doula, Midwifery student and SAHM to 4, Expecting a new little one around Christmas!