TTC possible implantation or AF??

Has anyone had this Happen? So last week Wednesday I finally got a smiley face for ovulating the first smiley in three months! But today I started bleeding. But it's not like my normal cycle. This came at 4pm my cycle always comes in the mornings. Very little cramping and when I go to the restroom it's blood in the toilet. No blood clots. I know it's too early to tell if I am pregnant but could this be implantation bleeding? And sill pregnant even if it's bright red? Please help!