Any advice please

Shazzy
Hi girlies, 
I am currently running 5days late for AF
I've tried many brands of pregnancy test, these are all negative. FMU and at other times of the day. 
I randomly decided to take an opk and it's positive? What does this mean?🤔
My cm is white and creamy/ sticky so not particularly fertile I don't think 😞
Could I be pregnant? Should I jump under my SO?