Could this be spotting?

Kaitlyn • We`ve been trying every since June 16 when i quit my birthcontrol
Ovulation was either the 18th or the 19th of March, and yesterday (April 2nd) I went to the bathroom and wiped and had a little bit of pink when I wiped two or three times. Has not came back after that. Thought I was starting my period but nothing to show, implantation bleeding and when should I test, ?