Implantation bleeding

Christina

So on my ovulation day- the 17th my SO and I had sex. On the 28th day, which is 11 days later I went to the bathroom, when I wiped it was very light pink, occasionally I would wipe and it would be brown or a rust color. And it wouldn’t happen every time. This went on until yesterday. This morning I went and nothing. I’m due for my period today, but I NEVER have spotting before my periods I’m 27- I would know! Lol! So could this be implantation!