I need opinions ladies...

Here’s where I’m at this month. I stopped bbt, because I have a pretty set work schedule but get up different times depending on the day. I haven’t even been using opk recently but decided to try again. I got an unusually early positive opk , as you can see. I also am now 4 days late based on opk. With bfn everyday. Any ideas? Was my opk not accurate? I’m pretty confused..

Thanks in advance!