Brown spitting

Hi alll ! My husband and I have been ttc for about 7 months now. I am 22 years old & we have a healthy 1 year old boy. I went to a clinic a few months ago due to the absence of my period. The doc told me, I could have PCOS but never confirmed it. Well my periods were ALWAYS normal before that. Once the doc said that, it was like my periods were haywire and so unexpected. I would always assume I’m pregnant then my period would come. Anywho when I was pregnant with our son, the biggest symptom to me was I had implantation bleeding. I am now a week late from my expected period, thought it’s always late and never predictable and I’ve been having brown spotting for a day. But only when I wipe. Could it be a possibility that I ovulated late and this is indeed implantation bleeding ? Anyone have similar symptoms and wind up preggers ?