Really confused...need advice please TMI PIC

I got a positive opk on CD8 which I thought was strange as I have irregular long cycles approx 34 days long. Today I noticed this which I believe means I am ovulating, but I thought I already had ovulated this month. I took another opk which was negative...any ideas? We are looking to start ttc next month so looking to get to know my cycle better but can't seem to track it because of this xxx