OPK question :)

Samie • Samie, 22, University Student, Fiancée to Adam, mummy to Lilly Jayne & expecting baba number two in August :)
This is my first time using them. 
​Today is meant to be my ov day according to glow. I know the opk is negative but there's a faint line. 
​My question is, have I missed my surge or am I gearing up for it? 
​Also put a pic of my calander up.. How does it look?