Spotting - what's normal and what's not?

Kassi

I haven't had any spotting so far in this pregnancy (I'm 6w3d), but then today there was some pink in my underwear. Not a lot, but some. And when I wiped there was some actual blood - again, not a lot, but little bit. In your opinions, is this the beginning of a miscarriage or is this normal and I'm overreacting? I just put on a pad to see if there's any more...