Really confused...need advice please TMI PIC

Nicola • Married. 29 years old. Mmc at 11 weeks July 2015 and mc at 4+3 weeks Nov 2015. Pregnant with baby girl due 30.07.17 ♡♡
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