Am I Pregnant?

McKenna
My last period was over on the 1st, I was supposed to start my period this week, but it hasn't come. Nor have I had any of my normal symptoms. I had extremely light, brown blood spotting from Saturday night of the 14th to Tuesday the 17th. Extremely light spotting!! I took a pregnancy test on Tuesday, but it was negative. But I am wondering if it's too early.