Weird spotting

Anna
My last real, "normal for me" period was back in August. I've been diagnosed with PCOS and usually get a period about every other month and they usually start off very heavy (soaking a super tampon within a couple hours for the first day or two) and then taper off, lasting about 6-8 days total. Since August, I've spotted for about a week at a time every 4 or 5 weeks. There isn't much blood, but some days there's enough cm that I need a panty liner. I might have enough blood to call it a "light flow" for an hour at a time, but then it all but stops again. I've had lotiony cm pretty much all the time since this whole spotting thing started. Any thoughts on what might be causing this or what I can do about it?