Too soon for spotting?

Katie
Lovely ladies!
My home OPK test showed my peak day on 13th; BD'd 12th and 14th. I have had cramping and as of yesterday, spotting - i haven't experienced mid cycle spotting before, but I'm guessing this is too soon for it to be implantation spotting, and I'm just getting myself excited?!
Has anyone else had spotting early that has gone on to be a BFP? I'm having all kinds of 'symptoms' like vivid dreams and nausea, but think I'm most likely just focus on these things as I'm so excited to by TTC and noticing them more!
Appreciate any feedback for how soon anyone could tell they were going to get a BFP :)