ttc head games

I have been on progesterone cream for 6 months. My periods were 40+ days. Since being on cream I haven’t had a period over 25 days, sometimes 14 day cycles even. We have been ttc for 3 months. I am on cycle day 35, but neg pregnant test. I guess I’m just confused & discourages. Any advice on what to do? (I was also told I have pcos 2 months ago)