What is wrong with my body other than pcos!?

I had a miscarriage may 31-June 8. My obgyn said to go through a cycle before ttc again. I took ovulation tests like I did before I was pregnant to begin getting an idea when I will ovulate the following month. I ovulated June 23. Had normal af July 4-8. June took opk but no positives. Stopped doing opk Aug 28 because I knew at would show within a week or so. Af never showed. I have pcos so this isn't strange. The strange thing is Aug 4 i began to have sore breasts on and off still now. Aug 6 I had yeast infection which I have never had. Aug 8 i began feeling fatigued. And now today I feel nauseated and don't want to eat much. I took 3 pregnancy tests all bfn. So what is wrong?