Implantation bleeding???

Sorry for the gross picture. I had unprotected sex and used the pull-out method (I know that is not the best) on May 30th. I ovulated June 2nd-June 8th. This pink/brown tinted discharge started showing up only today on June 11th. I’m not due for my next period until the 21st. I’m not currently on any birth control. Does anyone know if this may be IB or just normal after ovulation discharge?