Question!

I am using Natural Cycles to track my cycle and my BBT, but I’m also using LH strips. I am also currently on clomid, so my cycles are timed because of it. I need your opinions. NC is saying I ovulated on Day 16, but I think I ovulated Day 18 based on my temp dip but also I had positive LH strips on Days 16 and 17. NC is saying I ovulated before my LH strips even said positive. I’m panicking because I planned BD around Day 18, but what do you guys think— more likely CD 16 or 18?