pcos, and maybe ovulating?

Amber

so ive had pcos for 4 years. since about february I have been on and off sick. many times I thought I was prego but always got neg on tests. now I actually want to get pregnant and have been trying for 2 months now. HOWEVER! I didnt have a period between february and the end of august. so 8 months. as on Aug 31 I finally started my period. a week or so before I had really thick CM like egg yolky and didnt really know wtf it was becuase I have never had that . I was even afraid I had like a bacterial infection or something (never had one of those either) . I had a 4 day period . sept 4 I was done bleeding. but then again on the 11th I started bleeding. I am now down to spotting and will probably be off completely tomorrow. is this a sign I'm fertile/ovulating ? if so should I especially have sex while seeing the CM? TIA