Too soon for symptoms or wrong ovulation?

Nira • Wifey.Mommy.Happy
So I got what I *think* was a positive opk on the 8th.  It was just a few days after AF, but I have super irregular cycles.. So I wouldn't be surprised if its that early. 
Well started yesterday my boob have been aching BAD, just out of no where... 
So does this sound like early pregnancy symptoms or am I about to O and my positive test was wrong? All my opks since then have been really light.