Implantation bleeding

I had my period on 12/13/15 which lasted 6days. Not sure when ovulation started but I had a slight of pinkish blood on tissue after peeing 01/10/16. This only lasted a few hours. Which I believed to be implantation bleeding. 8days later still no period. I have no symptoms besides painful headaches that come bashing out the blue. Excited but scared at the same time