implantation?

Hello ladies, I am a little u decided weather I should do a pregnancy test or not. My first day LMP is 08/12 and I ovulated from 28-30 but on the 2nd day of my "ovulation " I had a pinkish, redish spotting on my panty linner only that one time no more neither she. I wiped so today is my 6DPO counting from my last positive wich is the 30th. But my open window to TTC started sijnce the 27th. So is it to early to test? I have been cramping just a little my breast are sore but I think because AF is due Sep 10th according to 2 of my apps and for glow I'm do for AF on the 14th sooooo what should I do????