Ovulation tests. Help!

Stephanie • Married 🤵👰 8/10/19. Angel baby boy 💙👼 5/6/14. Baby boy 💙👶 due 8/22/20.
The first picture is ovulation tests from March 13-16. The second picture is today. I thought I ovulated on Sunday March 15. Now I'm not sure. These tests from today look more positive. Need help ladies!