What's going on?

Pip • Baby dust to all you ladies ❤️
I'm 6 dpo, 6 days ago I had a very positive ovulation test, during the week I've taken ovulation tests and there has only been one line.. Just taken one now and the second line is building up again? What does that mean? That I'm going to ovulate again? 
This is today's ovulation test.. 
This was last weeks positive..