Question

Today I was 11dpo and 3 days til I should start. Test have been neg so I was fine since we aren't trying. Just got carried away one night and just so happened to ovulate the next day. Anyways, I had some light pink spotting and thought I was just starting early. Put on pad for when it came, but ever since then no spotting and nothing on the pad either. I know when I ovulated for a fact if that matters. Never had implation bleeding either that I know about. Isn't 11dpo a bit late for implating? Maybe I'm just over thinking.