Implantation bleeding 3 days late ?

Had my period on the 14th of January - 18

Ovulated on the 26th and had sex during that time

Period was supposed to come on the 10th, so I am currently 3 days late (usually never happens)

I went to the bathroom today to wipe and saw this really light spotting. I have a really heavy flow. Not sure what to make of it. ☹️☹️☹️