HELP ME! POSSIBLY PREGNANT?

I have never spotted before, and 14 days after I ovulated(which I am pretty sure it was 14, somewhere around there, not sure the exact date of ovulation) I had pink spotting. It carried on for 3 days then stopped. that was a little bit before my expected period.  I was supposed to start my period November 19th & I did not. I took 2 pregnancy test the 23 & they came back negitive. It is now December 3rd and I still have no period. My breasts are sore, I have been getting headaches & I am exhausted all the time.