Does Brown Vaginal Spotting/discharge Indicate Sign Of Pregnancy?

My last LMP was November 26th 2010. From Jan 1st to Jan 13th, I had very light brown spotting. Since then I've had very light clear discharge. I've had 6 pregnancy tests done and all were negative. With my daughter, I didn't get a positive test until I was 8 weeks pregnant. I'm just wondering if the spotting and discharge are early signs of pregnancy. I've also had some bloating, nausea, some breast tenderness. Thank You.