spotting and early pregnancy

Hoe many of you had spotting a when you expected your first period during a pregnancy?  Was the spotting a little late?  I only ask because I was supposed to get my perios (periods) yesterday.  I am spotting today, but it is not normal..too light.  Am I possibly pregnant?  My certix is high and my BBT is still up, you can check out my chart if you want.

http://www.fertilityfriend.com/home/1de5ad

Are my hormaone levels just messed up or is it something else?  I will take a test on Friday if it does not come this week, since I am already a day or teo late.  

[BabyBlue07]

before you have heavy period, they will spot a day before.  that's what happen to me.  My period suppose to come on 11/26, but on 11/25 i have spotting little (kinda browish color) then next day will be heavy flow.  

To be for sure, just take pregnancy test.  You should know right now if you are pos or neg.

good luck