Hello Garnet, I see that this was posted a week ago but I just stumbled upon it tonight. I was concerned about you and wanted to ask if you are okay?
Sometimes it is not uncommon for spotting to occur in pregnancy but it really depends on the woman. The causes of spotting during pregnancy can be serious so this is definitely something you should go get checked at a doctor's office.
In general, brown spotting is usually old blood and the redder it is, the newer it is.
Hope this helps! I am new to BL and in fact this is my first post.
From experience I know that this kind of situation can be scary, let us know how you are doing if possible and take care *hugs*