Spotting or implantation bleeding?

So I have pcos and I last got my period three weeks ago. My fiancé came in me 2 weeks ago (we’re not actively TTC but we are not opposed to getting pregnant) and that was the last time we had sex. I’ve been seeing this whenever I wipe since this morning (and a little bit yesterday). But nothing in the toilet or my panty liner. I’m just concerned because of my pcos my period is so irregular I never know what it is. Any advice would be much appreciated