CD41 on a 35 day cycle opk

I’m stressed by all of the BFNs despite the late period, which isn’t normal for me despite the long cycle. My opks are usually pretty light except for before ovulation. I don’t tend to have many false surges. So I decided to try an opk today. And it’s darker than normal? I have zero pms symptoms, I’m leaking colostrum, I’m 6 days late, I’ve been so nauseous. I’ve only taken clearblue tests so far and they’ve all been negative. What even is going on?