CD 37. 6 days late.

So I'm on cycle day 37. Usually I have a 28 day cycle. I am 6 days late on my period and i have had some faint positives but I'm the only one that seems to see them. But then after so long of course its evaps. And I'm also having this discharge that I usually have around my fertile week. Pic is below.

I feel like I'm going crazy guys. I have pcos and endometriosis but I'm on metformin and I have had a shot to start my period once then I was regular for a few months. I'm so confused.