With my first pregnancy, I was spotting very early on, when I was supposed to be 6 or 7wks. It wasn't brown, though. It was pink & red. & .It very quickly escalated to full blown bleeding. I had an ultrasound done & the baby was measuring a week or 2 behind what I was supposed to be. It ended in a miscarriage.
Not trying to scare you though, hun. Just my story!
I had cramping & it was very uncomfortable. & .I passed a .L.O.T of huge nasty clots. It hurt.
Be optimistic & don't worry until you know for sure! You said you had a pap a few days ago, right? So you may be irritated from that. Just look on the bright side & get lots of rest & just relax.
Let us know what happens, & pm me if you need to talk!