Brown blood is old blood. Its probably from implantation. I had spotting in my last pregnancy at 14 weeks, I went to the ER for it, and had a scan done. Baby was fine...but dr said since it was brown blood that it was from implantation bleeding that just hadn't cleared out yet. Also as a side note-dont keep checking your cervix...this can irritate it, and cause more bleeding. I'm sorry for your previous loss...I could understand how you'd be worried, but keep in mind spotting in early pregnancy is VERY normal...hugs!!! Keep us updated