Blazing positive OPK 6 days before AF?

Hey y’all. So I just want some input.

I received a positive opk last Saturday (picture below) and AF is due in 6 days.

This morning I took two OPKS (fmu) and they were blazing positive! (Pic below)

BUT THEN ... I took another opk off a two hour hold and it’s even darker. I have honestly never had an opk this dark EVER !!!!! ( picture below)

So what I’m wondering is if this has happened to anyone? I really thought I ovulated last weekend. I had my positive opk last Saturday and clear then negatives all this week. So I’m not sure why it would all the sudden be this dark . Any ideas? I know some people say OPKS can pick up on pregnancy tests but I’m still 6 days from AF so I feel like it’s way too early to test..