I neeeed some heeeeelp plz if anyone can tell me

Ta
Hiya ladies. 
​Right I don't have a clue what's going on now. I'm doing opk for the first time this month. I posted a pic a few days ago and it was quite faint but now the line is getting even fainter. My question is. After u ovulate does the line remain faint or does it not come up? 
​Also have I ovulated or haven't i?